158 



SORGHUM. 



ical conditions of this locality differed so Avidely from those of the pre- 

 ceding year, that it effected practically a change of climate. The first 

 frost occurred November 3rd, nearly a month later than upon the two 

 years preceding, and was followed by successive frosts upon November 

 5th, 6th, 15th, 16th, 19th, 2ist, 22nd, 23rd, 24th, 26th, and Decem- 

 ber 2nd and 4th. The mean- temperature after the first frost, and until 

 December 8th, when the last examination of the sorghums was m.ade, 

 was 39.8°, with maximum temperatures, November 12th, of 74.1°, 

 and, November 13th, of 70.8°. 



For greater ease of comparison, the above data for 1881 and 1882 

 are placed side by side in the following table : 



First frost.. 

 Other frosts. 



Mean temperature, October 



Maximum temperature, October... 



Mean temperature, November 



Maximum temperature, November 



To show the effects of the frosts this year, there is given in the fol- 

 lowing table the results of the analyses of the nine varieties which 

 were last examined on December 8th, and, for the purpose of compar- 

 ison, the last analyses made of these same varieties just before the first 

 frost of November 3rd. 



It is important to mention, that each of these nine varieties had 

 ripened their seed some time before the first frost, and that among the 

 nine there were three of the new African, varieties, viz : Nos. 7, 12, 

 and 16a. 



