282 ANALYSES OF SOILS. 



Organic matter and water 14'36 



Silicates _ 48-12 



Peroxide of iron and alumina 24*00 



Carbonate of lime 12*00 



Magnesia , 1-00 



99-48 



Three or four hundred feet above Cayuga lake the soil is looser, and though rich and pro- 

 ductive in all crops, and in wheat if the season is not adverse, is considered, however, 

 less favorable for the crop, as it is more liable to be heaved out by frost than the clay soil. 

 The following is an analysis of the soil which forms the ridge at Great Fields, near the 

 residence of David Thomas : 



Water of absorption 4-40 



Organic matter 10-24 



Silicates 73-12 . ■ 



Peroxide of iron and alumina 12-06 



Carbonate of lime . . 0-40 



Magnesia 0-12 



100-34 



A soil, forming the sides of the ravines, and in which the Kahnia latifolia thrives, gave 

 the following results on analysis : 



Water of absorption 2-92 



Organic matter - 6-80 



Silicates 86-94 



Peroxide of iron and alumina 1 -22 



Carbonate of lime 0-30 



Magnesia 0-10 



98-28 



It has been inferred from the fact that the Kalmia dies in the common soils of this region, 

 that this effect is due to the presence of lime. This opinion, however, is disproved by the 

 above analysis, which shows the existence of lime ; and this element is obtained in a pro- 

 portion still greater when the soil is thoroughly decomposed, and analyzed by means of 

 fusion by carbonate of soda and potash. Thus, 100 grains gave 



Organic matter 5-76 



Silex 83-65 



Peroxide of iron and alumina 8-70 



Carbonate of lime 1 -06 



Magnesia 0-20 



99-37 



