OP FOODS UPON THE EESPIEATION. 
719 
Bread. April 13 (6 exps.}, Plate XXXV. fig. 7. 4 oz. of white home-made bread gave 
maxima of increase in the carbonic acid of 1-48 gr. and 2-4 grs. per minute to myself 
and Mr. Moul respectively, and on another occasion, April 23 (7 exps.), of 1 gr. and 
2-2 grs. respectively. The quantity of air was increased on the two occasions 60 cubic 
inches and 20 cubic inches per minute in myself, and 96 cubic inches and 118 cubic 
inches per minute in Mr. Moul. The rate of respiration was not increased in myself 
or in Mr. Moul, and in the latter the pulsation fell somewhat. The effect was very 
enduring. 
Oatmeal.~A-^Ti\ 26 (7 exps.), Plate XXXV. fig. 10, July 9 (8 exps.), fig. 11. 4 oz. 
of good Scotch oatmeal, made into pudding with water, gave me a maximum increase 
of caibonic acid, on two occasions, of 1-63 gr. and *93 gr. per minute, and to Mr. Moul of 
1 32 gr. per minute. The volume of air inspired by myself was increased 55 cubic inches 
and 19 cubic inches, but Mr. Moul had a less increase. The respirations were lessened, 
and the pulsations were not increased. The effect was very enduring. 
^ Bice.—A^xil 28 (8 exps.). May 13 (8 exps.), Plate XXXV. fig. 9. 4 oz. of the best 
rice, well cooked, gave me maxima of increase in the carbonic acid of 1-9 gr. and 
1 44 gr. per minute, and Mr. Moul of 1T5 gr. and 1-94 gr. per minute. I had a maxi- 
mum increase in the volume of air of 54 cubic inches and 40 cubic inches per minute, 
and Mr. Moul of 44 cubic inches and 96 cubic inches per minute. There was generally 
a diminution m the rate of respnation, and an increase in that of pulsation. The effect 
was very enduring. 
Potato .— 17 (8 exps.), Plate XXXV. fig. 12, July 21 (6 exps.), fig. 13. 8 oz. 
of very good cooked potato, with 3 oz. of cold water, gave a maximum increase of car- 
bonic acid in myself of 1-27 gr., on two occasions, and 52 cubic inches and 20 cubic 
inches in the air inspired. The rate of respiration was in both instances reduced, as 
was also that of pulsation, but in a less degree. The potatoes were old in the first and 
new in the second inquiry. 
Commercial June 18 (6 exps.). 500 grs. of commercial starch gave me a 
maximum increase in carbonic acid of -8 gr. per minute, and of air 22 cubic inches per 
minute, whilst the rate of both respiration and pulsation was slightly increased. 
Gluten .— 11 (8 exps.), Jime 16 (8 exps.), Plate XXXV. fig. 8. The gluten washed 
out of 4 oz. of fine wheat flour gave me a maximum increase in carbonic acid of *84 and 
74 gr. per minute, and in ah: of 8 cubic inches and 11 cubic inches per minute. The 
rate of respiration was decreased very slightly, whilst that of pulsation was increased on 
one occasion and decreased on another. 
Arrowroot and Butter .— 21 (6 exps.), Plate XXXV. fig. 4. 1 oz. of fresh 
butter, added to 500 grs. of arrowroot, gave me an average increase in carbonic acid of 
17 gr. per minute, and a maximum increase of '4 gr. per minute. The quantity of air 
mspired was somewhat lessened, as was also the rate of respiration. The pulsation was 
increased 4 per minute. 
Bice and Butt&r . — May 14 (8 exps.). 1 oz. of butter, with 4 oz. of rice, gave to myself 
