The glass phial contained liquid ethyl chloride, little pressure being required to liquefy the gas at room temperature. By directing the nozzle downwards at the skin or mucous membrane to be analgesed, a stream of liquid squirts out, vaporising on contact, thus producing transient local temperatures of approximately -10 qc. Ether's unpleasant smell agitated patients. Ethyl chloride's pleasant odour reduced agitation. It could be used for induction and worked quickly without irritating respiratory passages. Ethyl chloride spray could also be used as a local anaesthetic. Faded rectangular burgundy box containing a glass phial with metal and rubber lid that forms a spray nozzle. The lid of the box had a mustard coloured manufacturer's label wtih burgundy writing. The phial has a discoloured white label with red writing and a blue label with white writing.Printed in white ink on blue label: IMPORTANT / NOT DESTROY THIS TUBE, IT CAN / BE REFILLED FOR / 2/10bengue & co. ltd., london, ethyl chloride, 1900, local anaesthesia