Hutchinson’s original spirometer from his lecture article in Medical Chirurgical Transactions, Volume 29, pages 137–252, 1846. This drawing is showing how to uncork the top of the spirometer so it can be returned to its starting position.
Hutchinson’s original spirometer from his lecture article in Medical Chirurgical Transactions, Volume 29, pages 137–252, 1846. This drawing is showing how to uncork the top of the spirometer so it can be returned to its starting position.