ILLUSTRATIONS. 



Page. 

 Fig. 1. Purifying and absorption apparatus 8 



2. Electrically-heated, constant-temperature incubator 9 



3. Detail of thermostat 10 



4. Effect of temperature on the rate of respiration of blackberries, cur- 



rants, huckleberries, raspberries, and strawberries 13 



5. Effect of temperature on the rate of respiration of peaches and apples. . 16 



6. Effect of temperature on the rate of respiration of peaches, pears, and 



plums 17 



7. Effect of temperature on the rate of respiration x)f grapes 18 



8. Effect of temperature on the rate of respiration of lemons, oranges, 



persimmons, mangos, and pineapples 19 



9. Data on the respiration of Delaware grapes, showing the evolved car- 



bon dioxid plotted directly and logarithmically 20 



10. Effect of temperature on the rate of respiration of blackberries, cur- 



rants, huckleberries, raspberries, and strawberries, plotting the 

 carbon dioxid logarithmically 20 



11. Effect of temperature on the rate of respiration of peaches and apples, 



plotting the carbon dioxid logarithmically 21 



12. Effect of temperature on the rate of respiration of peaches, pears, and 



plums, plotting the carbon dioxid logarithmically 22 



13. Effect of temperature on the rate of respiration of grapes, plotting the 



carbon dioxid logarithmically 23 



14. Effect of temperature on the rate of respiration of lemons, oranges, 



persimmons, mangos, and pineapples, plotting the carbon dioxid 

 logarithmically 24 



15. Distribution, about the mean, of the experimentally found values of a 



(rate at which the logarithm of the respiratory activity changes per 

 degree of rise in temperature) 28 



16. Theoretical rate of increase in the' temperature of fruit held under 



adiabatic conditions 37 



17. Theoretical rate of increase in the respiration and temperature of fruit 



held under adiabatic conditions 38 



