Inhalation therapy has been used for over 2000 years, but it was from the early 19th century that different types of inhalers were developed. In 1865, Dr Nelson developed the improved Nelson inhaler. It is still manufactured today with very few modifications. The efficiency of the improved Nelson's inhaler is demonstrated by the ongoing use of the item since 1865. This simple inhaler is suitable for use in homes and hospitals. This white china inhaler has an air inlet spout and an opening at the top to add hot fluids, it holds 1 litre, and drugs to the inhaler. Once added, a cork with a glass mouth piece is placed in the neck of the inhaler. For this item plastic tubing has been used as the mouth piece.On front of body inscribed, 'Dr Nelson's improved inhaler': Directions for use. Remove mouth piece, half fill inhaler with boiling water. Replace mouth piece and apply lips to it, breathe freely in and out as in ordinary full respiration.steam inhaler, dr nelson's inhaler, medical apparatus