covering the glass dish which contained it with a towel. The 

 sample was analyzed the last of February, T907, and showed an 

 absorption of 10.70^/r carbonic acid. 



When analyzed in July, 1906, there was enough carbonic acid 

 present to form 34.47^^ carbonate of lime and when analyzed in Feb- 

 ruary, 1907, there was enough to form 58.79ff carbonate of lime. 



WOOD AND LEAF MOULD, AND RIVER MUD. 



2109-2111. L Wood and Leaf Mould, received from Worces- 

 ter, Mass. 

 IL Earth and Vegetable matter, received from Swift 



River, Mass. 

 in. River Mud, received from Hanover, Mass. 



Moisture at ioo°C., 

 Nitrogen, 

 Ash, 



Phosphoric acid, 

 Potassium oxide. 

 Calcium oxide, 



