Round metal containerWriting on Labelether, anaesthesia, metal, container

Hyoscine hydrobromide was used before a general anaesthetic, particularly in the days of ether anaesthesia. It is sedating, decreases nausea and vomiting and dried secretions, particularly saliva. It made ether anaesthesia more pleasant for both patient and administrator.Three (3) small clear glass ampoules with red print on glass containing 1ml Hermette, Hyoscine Hydrobromide.ether anaesthesia, sedative, anti-nauseant

Mask used for administering ether anaesthesia. This mask also has a carbon dioxide inlet tube. Carbon dioxide was found to promote deeper breather which assisted in attaining faster anaesthesia. The mask was designed by an American anaesthetist James Tayloe Gwathmey, (1863-1944). Gwathmey invented a range of anesthesia equipment. In 1904, he introduced this mask as one part of a resuscitation apparatus. Gwathmey modified an existing mask to more closely fit the contours of the face. The holes in the rim allow for oxygen to be delivered for resuscitation or for the delivery of a combination of oxygen and anaesthetic. Wire framed mask in tear shape. There is a hinged top bracket which allows for a piece of flannel or domette to secured to the mask, onto which the ether would be administered. There is an inlet tube near the hinged bracket to allow for the administration of CO2 or oxygen and the rim is pierced with holes.james tayloe gwathmey, ether, anaesthesia, anesthesiologist, carbon dioxide, oxygen

Sir Frederick William Hewitt (1857-1916) wrote one of the earliest comprehensive textbooks on anaesthesia, and designed several pieces of anaesthetic equipment. In 1901, he described his wide-bore ether inhaler, a modification of the Clover Ether Inhaler. Unlike the Clover, it can be refilled with ether while still in use, and the mask is screwed into place so that it "cannot be unexpectedly detached." This version is a modified Hewitt's Inhaler which has a narrower 'ways' than the original Hewitt's, and no water compartment. Additionally, one side of the bowl is made of glass which enabled the person administering anaesthesia to see the level remaining in the bowl. Bowl shaped inhaler with a glass bowl base and metal dome top with a connector which appears to be for a rebreather bag. There is a metal switch at the base of the glass bowl to alter or regulate the flow.Stamped into central tube: COXETER LONDON Stamped into side of metal dome: 6460hewitt, wide-bore, clover, ether, anaesthesia, anesthesiology, anaesthesiology

Colour slide mounted in white slide case. Image depicts modified Clover Inhaler with glass chamber, cloth rebreather bag and metal facemask against a green background.Handwritten in pencil: EMBLEY'S / 9448clover inhaler, ether, anaesthesia, anaesthetic, anaesthetic history, medical history

Colour slide mounted in white slide case. Image depicts Clover Inhaler with cloth rebreather bag and leather facemask attachedHandwritten in pencil: EMBLEY'S / 9448clover inhaler, inhaler, ether, anaesthesia, medical history, anaesthetic history

Wire framed face mask with a hinged outer layer which can be opened to insert gauze or flannel on which to administer ether. The domed portion is attached by inserting wire edges into slots in the rim, which ends in a handle with a loop at the end.mask, ether, anaesthesia, open method

Robin William Smallwood completed medicine at the University of Melbourne in 1958 and decided on anaesthesia as a career, attaining his FFARACS in 1964. Smallwood was Dean of the Faculty of Anaesthetists at the Royal Australasian College of Surgeons from 1986 - 1987. Smallwood died 6 October 1987 after a brief illness and was awarded the Orton Medal posthumously. The Orton Medal is the highest single achievement the College can bestow. Anaesthesia had its origins in October 1846 in America, by May 1847 news of ether anaesthesia had reached Australian shores and by June 1847 Australian medical practitioners had begun experimenting with and demonstrating ether anaesthesia. Anaesthesia was not really recognised as a distinct branch of medicine in Australia until the first Diploma of Anaesthesia course began in Sydney in 1944. The specialty grew quickly and by 1952 the Faculty of Anaesthesia at the Royal Australasian College of Surgeons had been established. Within 40 years the Faculty had grown to such an extent it became a College in its own right and continues to offer training and professional support to anaesthetists.Printed certificate from the Faculty of Anaesthetists of the Royal Australasian College of Surgeons (RACS) awarded to Robin William Smallwood as a Fellowship. Printed in black ink at the top of the certificate is the RACS coat of arms. The certificate is dated 25 Feburary 1965 and has been signed by President of the College, Member Executive Committee, Dean of the Faculty and the Secretary.smallwood, robin william, orton, robert, faculty of anaesthetists, royal australasian college of surgeons, ffaracs, racs, fanzca

Dr Thomas Small designed this ether anaesthesia and analgesia machine while he was an Honorary Medical Officer at the Royal Women's Hospital in Sydney during the 1930s. The inhaler is compact and portable. Initially, Small experimented with other agents for the relief of labour pain but was not happy with any of them. He also tried various agents on himself, including nitrous oxide/oxygen, chloroform and ethyl chloride. Finally he settled on ether via a Clover inhaler as the best analgesic. This inhaler is only described in use in Australia and New Zealand, although it was used for almost 40 years. Black leather box with leather handle, lockable latches on either side and drop down front case panel containing a metal ether inhaler and length of black corrugated rubber hose with one end attached to the inhaler and the other end open for attaching a mask. The metal inhaler drum is circular and attached to the floor of the case with a small tap/lever to one side and a mixing valve on the top near the hose connection. The lever has incised gradings of quarter increments from 0 to 1. The box is designed for the ether inhaler to be portable.ether, small, thomas, analgesia, obstetrics, anaesthesia, anaesthetic, royal women's, sydney, queen victoria, melbourne

Curt Theodor Schimmelbusch (November 16, 1860 – August 2, 1895) was a German physician and pathologist who invented the Schimmelbusch mask, for the safe delivery of anaesthetics to surgical patients. In 1890, Schimmelbusch invented a mask for the delivery of anaesthetics to surgical patients. It was primarily designed for ether anaesthesia, but he also proposed its use for chloroform anaesthesia. Schimmelbusch designed a metal mask, over which a gauze could be stretched and secured. The mask was placed over the patient's mouth and nose, and anaesthetic was applied to the gauze, allowing the patient to inhale the anaesthetic as they breathed normally. Around the edge of the mask, a trough collected the residual anaesthetic, rather than allowing it to drip onto the patient's face.Oval shaped metal mask with a collapsible cross-shaped dome, hinged clamp and flat handleStamped into underside of handle: ELLIOTT SYDNEYschimmelbusch, mask, open method, chloroform, ether, german, physician, pathologist

Dr Joseph Clover was an early pioneer of anaesthesia, particularly chloroform. Like most physicians, he recorded his work in a casebook. This casebook records Clover's first administration of ether as anaesthesia. The book was given to Professor Robert Mackintosh by Mary Clover, Joseph Clover's daughter. along with other casebooks. Mackintosh then proceeded to re-gift the casebooks and they are now dispersed. Clover wrote this casebook when he was a medical student, before he trained as a surgeon and around the time that anaesthesia was discovered. He eventually became the most important authority on anaesthesia in Britain and is featured on the crest of the Royal College of Anaesthetists. This artefact associated with one of the world's foremost pioneers of anaesthesia is historically and scientifically significant on an international level, and is significant for its rarity, condition and research potential. It is one of the most significant items in the Collection.Bound book with heavy marbled card cover with red leather binding strip along the spine. Insides leaves have handwritten text by Joseph Clover recording his work.joseph clover, robert mackintosh, mary clover, anaesthesia

This item was designed by surgeon Paul Herman Martin Sudeck to administer ether and then chloroform anaesthesia. Paul Hermann Martin Sudeck was a German surgeon (28 December 1866 - 28 September 1945). He first described his inhaler in a 1903 article, "Eine neue Aethermaske" (A New Ether Mask).The metal cone shaped mask has moulded features on the proximal end to fit over the patient's mouth. The distal end is rounded and has an area for the absorbent material (in this item, a sponge) through which the anaestheric ether or chloroform was dripped. The side 'arms' would have been used to attach a strap.inhaler, mask, cone, paul herman martin sudeck, germany, ether, chloroform, sponge, 1900

Lambert Ormsby was a New Zealand surgeon who migrated to Ireland. He described his inhaler in a letter to the Lancet in 1877.Ormsby listed the advantages of his inhaler as simple, inexpensive, small quantity required to produce sleep, prevents evaporation of ether, portable and small (can be carried in pocket), short time to complete anaesthesia (two minutes) and safe. Disadvantages of this apparatus were that it had to be removed in order to recharge the sponge with ether or when anaesthesia becomes too deep. Considerable carbon dioxide accumulation developed and there would also be some oxygen lack. In thirty years of use, Ormsby's Inhaler underwent certain modifications, an exhalation valve was fitted to the mask and device for recharging the sponge with ether was later added. The Ormsby inhaler was modified by Carter Braine in 1898 with the aim of making it easier to clean. Essentially it is very similar except there is no net around the bag.The inhaler consists of an india-rubber flexible bag enclosed within a net bag to limit expansion. There is a soft metallic mouthpiece with india-rubber tubing around the edge. The tubing had to be purchased separately from the manufacturer. The body contains a wire cage with a similarly shaped hollow sponge into which ether was poured.Maker's details inscribed into metal ring around the bore: Barth Co. London.ormsby, new zealand, carbon dioxide, carbon accumulation, carter braine, portable

The glass phial contained liquid ethyl chloride. By directing the nozzle downwards at the skin a stream of liquid squirts out, vaporising on contact.. Ether's unpleasant smell agitated patients. Ethyl chloride's pleasant odour reduced agitation. It was used for controlling pain associated with injections and in minor surgical procedures. This item was used at Orbost Hospital.This item reflects the changes and development in medicine over the last century.A blue cardboard box containing a glass phial with metal lid that forms a spray nozzle. The lid of the box has a white manufacturer's label with blue writing. The phial has a discoloured white label with red writing.Ethyl chloride (pure) 100cc Woolwich for local anaestheticethyl-chloride chemical woolwich-eliott anaesthesia medical health orbost-hospital

The glass phial contained liquid ethyl chloride. By directing the nozzle downwards at the skin a stream of liquid squirts out, vaporising on contact.. Ether's unpleasant smell agitated patients. Ethyl chloride's pleasant odour reduced agitation. It was used for controlling pain associated with injections and in minor surgical procedures. This item was used at Orbost Hospital. This item reflects the changes and development in medicine over the last century.A blue cardboard box containing a glass phial with metal lid that forms a spray nozzle. The phial has a discoloured white label with red writing.ethyl-chloride chemical woolwich-eliott anaesthesia medical health orbost-hospital

Chloroethane, commonly known by its old name ethyl chloride, is a chemical compound with chemical formula CH3CH2Cl, once widely used in producing tetraethyllead, a gasoline additive. It is a colorless, flammable gas or refrigerated liquid with a faintly sweet odor. Originally, it was proposed as a general anaesthetic, filling the gap between the weaker narcotic nitrous oxide and the more powerful drugs ether and chloroform. 8670.1 - Dark blue cardboard lid. 8670.2 - Dark Blue cardboard box. 8670.3 - Cotton ball padding. 8670.4 - Semi circle cardboard. 8670.5 - Small rectangular boxes (2) placed either side of the top of the cylinder. 8670.6 - Glass cylinder with metal fitting. 8670.7 - Paper label on cylinder.- 100 c.c./- MEDCO./- 3 1/2 fl. oz./- ETHYL CHLORIDE./- Pure./- This conforms to all the requirements of the BRITISH PHARMACOPOEIA. 1932./- LOCAL ANAESTHESIA/- MEDICINAL CHEMICALS CORPOATION LIMITED. SYDNEY.

Dr. Curt Schimmelbusch (1860-1895), a German physician, designed his original mask around 1889 while an assistant surgeon. Surgical assistants were often assigned the task of delivering the anesthetic. During anesthesia it was not uncommon for ether and chloroform to get onto the patient’s skin, causing irritation. Chloroform can even cause burn-like reactions. Schimmelbusch designed the rim of his mask so that both sides curve away from the patient’s face to form a kind of trough. He intended the trough-like rim to collect excess anesthetic that would otherwise have trickled onto the patient’s face. To anesthetize a patient, gauze was stretched over the metal bars and fastened in place by the hinge. The mask was placed over the patient’s nose and mouth, and the anesthetic was applied in drops or lightly poured onto the gauze so that the patient breathed in evaporated anesthetic as well as air. This type of mask is sometimes still used today for ether anesthesia in developing countries when other means are not available. (Wood Library Museum of Anesthesiology) This particular object is a modified version of Schimmelbusch's design, known as Chadborn's modification.Oval shaped chromium plated mask with two metal strips linked front to back and side to side to create a dome. An oval shaped mobile wire frame is attached to the lower part of the mask by a hinge at the back, approximately two inches from the lip of the metal handle. A "U" shaped bit of metal is attached to the front of the mask which acts as a clip to fasten the wire frame to the lower section of the mask.anaesthesia

An oval gauze pad which could be washed and reused could be used to give a flat surface, enabling the ether anaesthetic to be absorbed as the patient inhaled. This mask was manufactured in three sizes.Mask, Schimmelbusch, for the administering of anaesthesia, chrome plated metal.anaesthesia

This a cast of the first baby to be delivered under anaesthesia, by the use of ether, in Edinburgh on 19 January 1847. The famous physician James Young Simpson, Professor of midwifery at Edinburgh University, attended this birth and wrote about it in the Monthly Journal of Medical Science 1846-7 Vol.7, p649-640. The cast of the baby's head was given to Lance Townsend, Professor of Obstetrics and Gynaecology, University of Melbourne by Robert Kellar, then Professor of Midwifery and Diseases of Women at the University of Edinburgh, when Professor Townsend was visiting Edinburgh. There is at least one other plaster copy; one is located at Wood Library-Museum of Anesthesiology, 520 North Northwest Highway, Park Ridge, IL 60068-2573, USAReplica of a new born baby's head, painted plaster, life size. The model of the head shows a large indentation of two and a half inches in the skull on the left side. The baby was delivered through a severely deformed pelvis, suffered a large indentation to the skull and did not live.obstetric delivery, anaesthesia

Dr. Gwen Wilson, Emeritus historian, gifted this book at ANZCA's first independent Annual Scientific Meeting held in Launceston in 1994. Dr Wilson presented this gift after her speech about the life of William Russ Pugh and his significant contribution to anaesthesia in Australia. It is unclear as to how the book came into Dr Wilson's possession. Published in London, 1845, for Longman, Brown, Green and Longmans, this book was formally owned by general practitioner Dr William Russ Pugh, being the first medical practitioner in Australia to administer ether anaesthetic on 7 June 1847, in Launceston. The author of the book, P E De Strzelecki acknowledges Pugh for his assistance during his stay in Launceston and for allowing him the use of his laboratory for the analysis of the soils and minerals that were subsequently reported in this book (Page 131). Tan coloured cloth book with an embossed circular motif on the centre of the front and back cover. The same embossed motif is repeated four times along the spine of the book. An embossed design of small, four petal flowers borders the edge of the front and back cover. The title of the book 'Strzelecki's New South Wales and Van Diemen's Land' is printed in gold on the spine. The cloth has come unstuck at various places around the spine and a small section is missing from the base of the spine. The cover is worn and has numerous dark stains possibly from mould. The book contains 19 engraved and lithographed plates. This includes a handcoloured octavo folding, geological map, bound as a frontispiece, depicting the NSW coast down to Gippsland and Tasmania, a fold out single colour geological cross section of the Newcastle Coal Basin, 14 plates illustrating shellfish and flora and three tinted lithographs. Single page maps at the back illustrate wind patterns around Australia. [front title page, two black ink stamps that have bled through to the next page] W R.PUGH [front title page, black ink, cursive writing] H Grant \ 5 May 1910 [front title page, pencil, cursive writing, written around Pugh's stamp] Purchased from \ (unrecognizable script) [front title page, previous owner's name was rubbed out and consequently tore the page making the entry unreadable] [Inner back cover, bottom LHS, blue stamp] BOUND BY \ WESTLEYS & \ CLARK \ LONDON [Inner front cover, bottom LHS, black and purple ink] P65 \ 76 \ 78 \ 98 \ 163 \ 164 \ 217strzelecki, van diemen's land, wilson, gwen, pugh, william, launceston, green and longmans

The Clark apparatus is sectioned across the top on one side only, and the inside of the sectioned area is painted with red and blue. Part of the outside of the main body of the apparatus is painted red. The apparatus has four identical arms coming out of opposite sides of the body that end in spoon-shaped loops, each with screws connected to black knobs coming through them. There is a red handle that runs parallel to the body and arms of the apparatus, jutting out from the middle of the top of it. The apparatus is on a black cast iron stand on castors, with gold decoration throughout.ether, nitrous oxide, oxygen, gas, anaesthesia

The apparatus sits on a four-legged stand with castors. There is a fabric mesh bag affixed to the top of the apparatus which hangs down half the length of the stand. There are two metal arms protruding out from halfway down the length of the stand; one of the arms has a rubber tube attached to it and the other has a fine braided rope, both of which connect to the top of the apparatus. The top of the apparatus has been sectioned.anaesthesia, rebreathing, carbon dioxide, ether, oxygen

The photo contains a series of photographs depicting the correct procedure for setting up an anaesthetic tray for theatre.Green, leather bound photo album with brown leather edge, held together by brown and gold yarn. There is gold gilt lettering on the front, surrounded by a gold gilt decorative oval, spelling out "Photographs". Inside the album are a series of heavy paper pages with photographs and labels stuck on to them. Not all pages have been used, and additional photographs were stored among the blank pages. These have now been relocated to BK3. The photos depict the various ways in which an anaesthetic tray should be prepared for particular types of operations.White sticker [discoloured] adhered to top right hand corner of photo album, with handwritten inscription: ANAESTHETIC TRAYSanaesthesia, anesthesia, surgery, boyle's machine, trilene, ether, laryngoscope, endotracheal tubing

The Lidwill machine was designed by Mark Lidwill in 1913, for the purpose of mechanical or insufflation anaesthesia. It was manufactured by Elliott Bros. of Sydney. Shortly afterwards, the Anaesthetic and Portable Machine Company of Sydney devised a machine that was functionally the same but also contained an electric lamp heater.Colour photograph of a modified Lidwill anaesthetic machine sitting on carpet, taken from above. The vaporiser is metal and circular, and has metal valves and controls and two orange tubes. The machine has an electric cord and power plug which is coiled on the floor.anaesthetic equipment, lidwill anaesthetic machine, mark lidwill, ether vaporiser, anaesthetic and portable machine company of sydney, vaporiser

The Lidwill machine was designed by Mark Lidwill in 1913, for the purpose of mechanical or insufflation anaesthesia. It was manufactured by Elliott Bros. of Sydney.Colour photograph of a Lidwill anaesthetic machine sitting on carpet. A circular metal ether vaporiser sits on a brown wooden base, with brown tubes connecting to a trap bottle and metal valves, and a brown tube connected to the valve is coiled on the floor.anaesthetic equipment, lidwill anaesthetic machine, mark lidwill, ether vaporiser, elliott bros sydney

Black and white photograph of the head of a portable Foregger "Metric" Gas Anaesthesia Apparatus. The apparatus has glass flowmeters and controls for fine and coarse oxygen, cyclopropane, nitrous oxide and carbon dioxide. There is also an ether container and a blood pressure nanometer.•Handwritten in grey pencil on reverse: Dr. Desai's Special Metric •Handwritten in black ink on reverse: III. •Handwritten in grey pencil on reverse: dvpd.anaesthetic equipment, anaesthetic machine, flowmeter, foregger metric gas anaesthesia apparatus, oxygen, nitrous oxide, carbon dioxide, cyclopropane

Dr James (Jim) Villiers went to Vietnam as an anaesthetist with the Australian Surgical Team (civilian) during 1963. He used this bag for carry-on luggage. Despite assurances about the quality of resources available on arrival, he carried an essential part of the breathing circuit for an EMO vaporiser in his carry-on. The actual vaporiser was packed in his check-in luggage. In 1963 the Vietnamese government sought training in Australia in anaesthetics for several medical technicians. Australia was not able to meet the request as anaesthesia training in Australia is restricted to qualified doctors. Instead, the Dean of the Faculty of Anaesthetists at RACS suggested sending a team of anaesthetists to Vietnam to conduct training for technicians there. However, they requested a preliminary survey be undertaken in order to determine the abilities of the prospective trainees and establish contacts with medical authorities in Vietnam. James (Jim) Villiers was one of the people who undertook the survey and made a report. Training of Vietnamese medical technicians was undertaken using the Epstein MacIntosh Oxford Anaesthetic Apparatus (EMO). This equipment was robust, portable and relatively cheap, there are few moving parts for servicing, it requires only ether and air for operation.Brick-red vinyl bag with white Qantas branding including the flying kangaroo printed on both sides. The bag has a zipper opening and contains an anaesthetic apparatus mounted on a piece of wooden particle board. There are two black hoses, a white hose, a black plastic connector, a metal t-bar connect, a green resuscitation bag and black face mask.james villiers, malignant hyperthermia, vietnam, qantas, australian surgical team, long xuyen, bien hoa, anaesthesia training

The Epstein, Macintosh, Oxford vaporizer (EMO) was designed in 1952 by Dr H. G. Epstein and Sir Robert Macintosh of the Nuffield Department of Anaesthetics at the University of Oxford, with the aid of their technician, Mr Richard Salt. It was essentially a refinement of their earlier Oxford vaporizer and designed specifically to deliver ether in known concentrations, irrespective of the temperature of the ether. Robert Macintosh was born at Timaru New Zealand in 1897. In December 1915 he travelled to Britain and was commissioned in the Royal Scots Fusiliers, soon transferring to the Royal Flying Corps. He was shot down behind enemy lines on 26 May 1917 and taken prisoner, escaping several times. When the war ended he returned to medical school and qualified in 1924 as MRCS LRCP. Macintosh's initial intention was to be a surgeon, but soon after qualifying he developed an interest in the field of anaesthesia. Macintosh became the first professor of anaesthetics at Oxford although the university was at first against the appointment. He recruited the scientists Dr Kurt Mendelssohn and Dr H G Epstein and together they designed and built the Oxford vaporiser, a simple, portable, and accurate means of delivering varying concentrations of ether which was to see service in the second world war. He was knighted in 1955 and died at Oxford in 1989.The apparatus is a round, barrel style object with three small rubber feet and a moulded handle over the top. It consists of a vaporising chamber, wick, ether level indicator, temperature compensating value, air bypass chamber and mixing chamber. Manufacturer's label on reverse: EMO, Longworth Scientific Inst. Co. Ltd. England. Serial No. 5878macintosh, epstein, oxford, vaporiser, nuffield, ether

This equipment was located in the outpatients department (Philip Block) until September 2021 when it was deemed obsolete by Infection Prevention. Hubert Ingham Clements (1886-1969) was an Australian engineer who established his own engineering business in NSW in 1908 manufacturing combustion engines. He became interested in anaesthesia equipment and from the 1920s Clements worked on improving ether apparatus and manufacturing portable suction machines for use in hospital operating theatres. The latter machines were to earn an unrivalled reputation for reliability; many remained in service over thirty years after their date of production. The business became H. I. Clements & Son when his son William joined the company. (https://adb.anu.edu.au/biography/clements-hubert-ingham-12846)Item is an example of equipment from its time period and is of historic significance.Portable Clements Suction & Pressure Pump built by H I Clements & Son Ltd Consists of motor with attached carry handle, attached pressure regulator, attached disposable drainage cannister with tubing and power cable mounted on a trolley with castors.H I Clements & Son Pty. Ltd. Metal Manufacturing label with: Serial Number 1725FS and SAA Certificate Number BCG/4S/60194 on motor (front side) Ward 11 engraved on motor handle AH Biomedical Engineering orange test due sticker and AH Biomedical blue test sticker (reverse side)suction, clements, portable suction, respiratory, pressure pump, surgical drainage

Sidney Yankauer, M.D. (1872-1932), an ear, nose and throat specialist and pioneer in bronchoscopy, practiced at the Mount Sinai Hospital in New York. Dr. Yankauer, a prolific inventor of medical equipment, might best be known for the tube he designed for suctioning the mouth and throat. Yankauer introduced the wire-mesh anaesthesia mask around 1904. The drop method involved placing the mask over the patient’s nose and mouth, and then placing gauze over the mesh of the mask. Next, liquid anaesthetic, such as ether or chloroform, was applied in drops or lightly poured onto the gauze so that the patient breathed in evaporated anesthetic as well as air. The gutter around the base of the mask was designed to catch any residue of the harmful anaesthetic. (The Wood Library Museum, 2016; Museum of Healthcare Kingston, 2016)A metal tear-shaped mask with gauze wire dome, gutter around the base and detachable spring piece with open circular handle to secure cloth over gauze. Found inside medical carry box #899Stamped underneath neck of circular handle: HATRICKdr [e.s.] holloway, hatrick, yankauer, drop method, mask, gauze