Anderson: growth of cucurbita. 279 



Plate XVI. (See Table IX.) 



Curves of growth and relative humidity, fifty hours inclusive of the 

 beginning of the "ripening period." Daily increase and decrease nearly 

 equal. 



3 mm. vertical=l gram of increase or decrease. 



2 mm. vertical=l per cent, variation of humidity. 

 5 mm. horizontal=l hour. 



Plate XVII. (See Tables X and XI.) 

 Curves of growth, temperature, and of the transpiration of fruit No. 2, 

 with stem in a sealed test tube of water, fruit and test tube with water 

 resting on the decrease pan of the registering balance. 

 Fifty hours during the time of "ripening period." 



Indicates the effect of cold (decrease at night.) Daily increase and de- 

 crease nearly equal. 



3 mm. vertical=l gram of increase or decrease. 

 3 mm. vertical=l°C. 



3 mm. vertical=0.13 grams (approximately) of transpiration. 

 5 mm. horizontal=l hour. ; 



Plate XVIII. (See Table XII). 



Curves of growth, relative humidity and of the transpiration of fruit 

 No. 2 on the decrease pan of the registering balance, stem not in water, 

 but cut from fruit. Fifty hours preceding the completion of the "ripen- 

 ing period." 



Indicates grand maximum of daily decrease, also maximum daily in- 

 crease immediately following an entire day of decrease. 



3 mm. vertical=l gram of increase or decrease. 



2 mm. vertical=l per cent, variation of humidity. 



3 mm. vertical=0.13 grams (approximately) of transpiration. 

 5 mm, horizontal=l hour. 



Plate XIX. (See Table XIII. ) 



Curves of growth, relative humidity, temperature and growth of inter- 

 nodes, during fifty hours after the fruit had ripened. 



Indicates the effect of sprinkling at the time of rapid decrease. 



[The temperature and growth of internodes plotted on this plate are 

 results obtained by Mr. D. T. MacDougal, by observations carried on in the 

 plant house at the same time. The observations were made on another 

 plant of the same genus, using a Baranetzky'sauxanometer.J 



3 mm. vertical=l gram of increase or decrease. 



2 mm. vertical=l per cent, variation of humidity. 



3 mm. vertical=l°C. 



3 mm. vertical=.09 mm. actual growth elongation or shortening of 

 internode. 

 5 mm. horizontal=l hour. 



Plate XX. (See Table XIV). 

 Curves of relative humidity, and variations in weight of the fruit, be- 

 ginning eleven days after the close of the "ripening period." 

 Increase at an end. Fruit losing weight by transpiration. 

 10 mm. vertical=l gram of decrease, 

 2 mm, vertical=] per cent, variation of humidity. 

 5 mm. horizontal=2 hours. 



