144 



TOURNAL OF THE 



sugar beet will not flourish south of the isotherm of 70=^ mean tem- 

 perature for the summer months (Bulletin 3, Chem. Div. Agric. 

 Dept.) The mean monthly temperature for June, July and August 

 of '84 and '85, as well as rain fall, were as follows: 



Temperature. 



'84 '85 



June .- 71-77 71.8^ 



July -- -.72.73" 76.93' 



August 71.28" 74,84 



Total.- -. ..215.78 223.67" 



Average 71-93 74-52^ 



It will thus be seen that last season was particularly unfavorable 

 as regards both temperature and rainfall, and yet the juice averaged 

 nearly 11 per cent, sugar, while the experiments at Washington gave 

 Juice of only 7.61 per cent, sugar. Further experiments will be un- 

 dertaken this year on this subject. 



JAS. LEWIS HOWE. 

 Laboratory of Central University, 

 Richmond, Ky., March, 1886. 



LITHOGRAPHIC STONE FROM TENNESSEE. 



Specimens of lithographic stone from Clay county and Overton 

 county, Tennessee, which are claimed to be very similar to the 

 Bavarian stone, have been analyzed with the following results : 



1. Clay county, Tennessee, buff lithographic stone. 



Calcium carbonate 83.36 



Magnesium carbonate 10.34 



Iron and aluminum oxide — .80 



Silica and insoluble silicates - S-^S^ 



