EFFECTS OF FROST UPON SORGHUM. 



155 



For the purpose of learning the effect of frost upon the sorghum, the 

 following examinations were made in the fall of 1881, at the Depart- 

 ment of Agriculture, at AVashiugton. 



An average was taken of all the analyses made of each variety of 

 sorghum under cultivation, just before the dates- of the first frosts, 

 which occurred October 6th and 11th, viz.: those analyses Avhich were 

 made September 27th, October 3rd, 4th, 5th, 7th; also, those analyses 

 made immediately subsequent to these frosts, viz: on October 14th, 

 15th, 17th, 18th. The results are given in the following table: 



TABLE SHOWIXG EFFECT OF FIRST FROSTS. 



AVERAGE RESULTS OF ANALYSES OF THIRTY-SIX VARIETIES OF SORGHUM BEFORE 

 AXD AFTER THE FROSTS OF OCTOBER 6tH AXD IItH. 



