1912] PEIRCE—RESPIRATION 103 
cerned had been made. This amounted to a gain of 370 calories 
per day, when the seven days are averaged, or 4.93 calories per day 
for each gram of peas. The comparative daily changes in room 
temperatures, flask temperatures, and the number of calories liber- 
ated, ‘are shown on the accompanying diagram (fig. 5). 
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Fic, 5.—Graphic representation of the amount of heat liberated by germinating peas 
A comparison of these figures with those of BONNIER’S classical 
paper? shows at once that my figures are lower than his. For 
example, he says (p. 12), “1 kilogramme de graines germant dégage 
en 1 minute 59 calories.”’ The greatest average gain in heat in my 
experiment was on the fourth day, in which 923.9 calories were 
accumulated in 23.5 hours. Calling this 924 calories and 24 hours, 
7 Bonnier, G., Recherches sur la chaleur végétale. Ann. Sci, Nat. Bot. VII. 
18:12. 1893. 
