278 MINNESOTA BOTANICAL STUDIES. 



Explanation of Plates. 



. Plate XI. (See Table I). 



Curve of grand period of growth. Portions of curve above base line 

 show net increase; below, net decrease. Broken line at left represents 

 probable course of growth from time of pollination to beginning of 

 record. 



Fruit completely ripened October 22. 



1 mm. vertical==10 grams increase or decrease. 

 5 mm. horizontal=l day. 



Plate XII. (See Tables II and III). 



Curves of growth and temperature during fifty hours immediately pre- 

 ceding the grand maximum. 



A rise in the daily maximum increase, also the effect of sprinkling vine 

 is demonstrated. 



3 mm. vertical=l° C. 



3 mm. vertical=l gram of increase. 



5 mm. horizontal^! hour. 



Plate XIII. (See Tables IV and V). 

 Curves of growth, temperature and humidity, during fifty hours, in- 

 clusive of the grand maximum. First daily decrease. 



2 mm. vertical=l gram increase or decrease. 

 2 mm. vertical=l°C. 



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

 5 mm. horizontal^! hour. 



Plate XIV. (See Tables VI and VII). 



Curves of growth, temperature, barometric pressure, transpiration of 

 the leaves and humidity during fifty hours immediately following the 

 grand maximum. 



Demonstrates lessened daily maximum increase. 



3 mm. vertical=l gram increase or decrease. 



5 mm. vertical=0.1 inch variation in barometric pressure. 



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



3 mm. vertical=0.23 grams (approximately) of transpiration. 

 5 mm, horizontal==l hour. 



Plate XV. (See Table VIII.) 



Curves of growth, relative humidity and transpiration of the leaves 

 during fifty hours, ending three days before the beginning of the "ripen- 

 ing" period. 



Indicates the effect of rain, cold wind and sprinkling vine on growth. 



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



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



3 mm. vertical=0 23 grams (approximately) of transpiration. 

 5 mm. horizontal=l hour. 



