EXPERIMENT STATION. 53 \ 



The direct results of analysis were as follows: < 



Lime, - 43.43 ■ 



Magnesia, . l-^^ i 



Soda, - --- - 5.44 | 



Potash. -93 .■ 



Oxide of iron, - -- 51 -♦ 



Chlorine, -- 6.55 ■ 



Phosphoric acid, — -- -16 



Sulphuric acid, ... r - - l-''8 " : 



Carbonic acid, 11.23 



Insoluble matters, - - - -• - 2.67 - . 



Moisture at 212°, ,- --- 16.01 : 



Combined water, by difference, -- 9-90 



100.00 ; 



The actual state of combination of the ingredients of the " Nor- l 



folk fertilizer" is probably the following : — 



Common salt (sodium chloride), 10.26 j 



Muriate of potash (potassium cliloride), - .67 j 



Sulphate of potash (potassium sulphate), 95 



Gypsum (hydrated calcium sulphate) 2.88 



Carbonate of lime (calcium carbonate), 25.52. 



Slacked lime (calcium hydrate), 37.26 



Slacked magnesia (magnesium hydrate), 2.02 



Phosphate of iron, - -67 



Sand and insoluble matters, - - 2.67 



Moisture and loss, - - 17.10 



100.00 



The Norfolk Fertilizer is a raixtui-e of ground oyster-shells and 

 slacked lime with some 15 per cent, of " kainite" or similar low- 

 grade " potash-salts" or the equivalent. Its fertilizing and com- 

 mercial values are about those of leached ashes. The Connecticut 

 farmer can scarcely afford to pay more than 17 to |8 per ton for 

 it. The price quoted to the Station was $30. 



Fossil Marl. 



786. Fossil Marl. Sampled and sent by Jones Brothers, South 

 Windsor. R. W. Roberts, East Hartford, dealer. 



"Fossil Marl" in this instance is the Green Sand Marl of New 

 Jersey. The sample 786 is qiiite similar to 316 analyzed at this 

 Station in 1879 (see Station Report for that year, p. 46), Below 

 are given the full analysis of 316 and a partial analysis of 786. 



