94 AMERICAN GRAPE CULTURE. 



ure. The statistics which he presents, as the 

 results of trials continued during a series of 

 years, and on a large scale, would seem to war- 

 rant his conclusions. The system of Dr. Guyot 

 may be understood in a good measure from an 

 inspection of Figs. 39-44. He has shelters to 



Fig. 42. 



be used at different seasons of the year, which 

 would require quite a number of engravings to 

 Jlustrate fully. Dr. Grant, however, just be- 

 fore the appearance of Guyot's work, suggested 



Fig. 43. 



