No. 112.] 879 



matter, which gives to the soil a highly absorbing and retentive 

 power. It is a superior soil." 



One hundred parts dried, at 212°, gave of 



Organic matter, 16.20 



Silica, 70.68 



Iron and alumina, 10.36 



Lime, 1.10 



Magnesia, 0.36 



Potassa, 0.48 



Soda, 0.28 



Chlorine, • 0.22 



Siilpiiuric acid^ 0^6 



Phosphoric acid, 0.04 



99 98 



Tl:ie following is an analysis of a soil from North Elba, marked 

 No. 31, sandy loam. This sample indicates the soil which forms 

 the extensive and fertile plains in North Elba, whicli have been 

 repeatedly noticed in the body of this report : 



One hun(iered parts dried at 212°, gave of 



Organic matter, . /. . 18.16 



Iron and alumina, 6.74 



Silica, 71 .88 



LInie, 0.54 



Magnc>ia, 0.36 



Polassa, 62 



Suda, 0.24 



Chlorine, 0.08 



Sulphuric acid, 112 



Phosphuric acid, 0.04 



99.78 



" Under a microscope this soil is seen to be made up of tlie de- 

 bris oi" }-rimary rocks. Among th<' minerals arr j>]ainly seen 

 quartz, mica, liornblcnde, and fL'lsi>cir. iJy reference to the analy- 

 sis, tlie Soil will be setn to be remarkably rich in organic matter. 



