Average of Calcium oxide (lime) amounts to 34.28 per cent., 

 varying from 25.58 to 56.02 per cent, in different samples. 



Mineral matter (coal ash, sand,) insoluble in diluted hydro- 

 chloric acid : 



Below 5 per cent. 2 



From 5 to 10 " 7 



" 10 to 15 " 19 



" 15 to 20 " 8 



'' 20 to 30 " 4 



Samples of wood ashes of late tested at the station are on the 

 whole somewhat inferior, as far as percentage of potash is concerned, 

 to those tested during the preceding year. 



LIME KILN ASHES. 

 543. Received from GreenQeld, Mass. 



Per Cent. 



Moisture at lOO'^ C, 25.99 



Potassium oxide, 1.45 



Phosphoric acid, 0.26 



Calcium oxide, 33.99 



Insoluble matter, 4.39 



ASHES FROM CREMATION OF GARBAGE. 

 544-540. I- Received from Lowell, Mass. 

 II. Received from Lowell, Mass. 

 III. Received from Northboro, Mass. 



Moisture at 100° C, 



Potassium oxide, 



Phosphoric acid. 



Calcium oxide, 



Magnesium oxide. 



Ferric and Aluminum oxide, 



Sodium oxide. 



Sulphuric acid, 



Chlorine, 



Carbonic acid. 



Insoluble matter. 



* Not determined. 



