respirometern.

1849 Lancet 2 June 602/2 I am the embodiment of an ‘idea’ on phthisis, and I show the difference in the expired air of a healthy person, and also of a phthisical person... I am, Sir, yours respectfully, A ‘Respirometer’.]

1859 Edinb. New Philos. Jrnl. 9 293 He [sc. Dr. Edward Smith] found, by his new instrument, the ‘Respirometer’, that the quantity of carbonic acid expired varied most materially.

1880 T. C. Duncan Feeding & Managem. Infants & Children 328 Blowing into a respirometer will give zest to this lung practice.

1907 Arch. Otol. 36 401 A person afflicted with pulmonary tuberculosis..so weakened by his disease that he can raise the water only six inches in the ‘Respirometer’.

1992 Sci. Amer. July 56 (in figure) Collecting Human Breath... The respirometer measures the amount of each exhalation.

2001 Independent 16 Mar. ii. 6/3 In anaesthetics the Wright Respirometer is an essential tool for assessing breathing during operations.

a1884 E. H. Knight Pract. Dict. Mech. Suppl. 753/1 Respirometer, the name adopted by Mr. Fleuss for his diver's apparatus for supplying air to a person beneath the surface of the water.

1896 Bot. Gaz. 22 468 Respirometer... It consists of a small chamber in which germinating seeds or other living material is placed, surrounded by water to keep the temperature uniform.

1908 W. F. Ganong Lab. Course Plant Physiol. (ed. 2) 131 Soak one set [of seeds] some 10 hours or more and place it in the chamber of a respirometer.

1948 Jrnl. Exper. Med. 87 177 (caption) Details of respirometer chamber to hold twenty eggs.

1969 Sci. Jrnl. Nov. 19/2 A simple fully automatic respirometer which measures organic pollution in sewage has been developed.

2008 Aquaculture 281 78/2 Oxygen consumption rates were determined from the depletion curves showing the oxygen concentration of seawater..vs. time within a closed plexi-glass respirometer.