i86 Missouri Agr. Exp. Sta. Research Bulletin No. 8 



Table 13. Showing Percentage of Proteids in Frozen and 

 Unfrozen Sap From Succulent Plants. 



Kind of Sap 



Cabbage greenhouse, dry 

 soil 



Cabbage, greenhouse 



Cabbage, out-of-doors 



Cabbage sap, outside 



Cabbage, inside dry soil. . . 



Cabbage, inside 



Tomato sap, greenhouse. . . 



Tomato sap, greenhouse, 

 dry soil 



Tomato sap, outside 



Pea sap, inside 



Pea sap, outside 



Lettuce, sap inside 



Lettuce sap, outside 



Kale, greenhouse 



Kale, outside 



Date 



Apr. 8,'12 



Apr. 8,'12 



Apr. 8, '12 



Nov. 28,'ll 



Oct. 28,'ll 



Oct. 28,'ll 



Dec. l,'ll 



Dec. 1/11 



Dec. l,'ll 



Apr. 27, '12 



Apr. 27, '12 



Apr. 27,'12 



Apr. 27,'12 



Dec. 16,'ll 



Dec. 16,'ll 



Tem- 

 pera- 

 ture 



-3 

 -3 

 -3 



-5 

 -5 



-5 

 -3.7 



-3.7 



-3.7 



-5 



-5 



-5 



-5 



-6.2 



-6.2 



Average per 



cent proteids. 



Sap frozen. 



0.975 

 0.781 

 1.406 

 1.675 

 1.144 

 0.919 

 0.594 



1.313 



0.700 

 2.069 

 3.088 

 0.519 

 0.269 

 1.744 

 1.963 



Average per 

 cent proteids. 

 Sap unfrozen. 



1.069 

 0.838 

 1.438 

 1.856 

 1.281 

 0.956 

 0.438 



1.444 

 0.713 

 2.413 

 1.625 

 0.613 

 0.263 

 1.831 

 1.994 



In case of cabbage, kale, lettuce and peas there is some evidence 

 of precipitation in case of the more tender greenhouse plants, but 

 it is possible that the differences are within the range of experimental 

 error. 



In March, 1913, apple roots that had been growing in the green- 

 house for sixty days had sap expressed, half of it frozen to a tempera- 

 ture that would kill them, the other half not frozen. At the same 

 time sap was taken from roots that had been kept in cold storage 

 at a temperature seldom varying from 32F., with the following results : 



Table 14. Showing Percentage of Proteids in Frozen and 

 Unfrozen Sap From Apple Roots. 



