OF SEVERAL JAPANESE FERTILIZERS. 
to distribute the solid manure (compost) by hand and 
would run the risk of hurting and infecting themselves, if 
lish bones were contained therein. The finely powdered 
material, for which a fermentation in the compost bed must 
likewise be recommended, would, of course, admit of the 
application of the whole refuse and have an effect far 
superior to the present mode of utilization. Its composition, 
calculated from the average results of the above analyses 
would be, as follows :— 
Moisture . 7.85 °/n 
Organic matter.G3.8G ,, 
Ash.28.29 ,,. 
Nitrogen . 0.15 ,, 
Phosphoric acid. 7.64 ,, 
Lime .10.45 ,, 
Magnesia . 0.22 ,, 
III. Shells of Sea-Turtle. 
The specimen which was analyzed in our laboratory 
came from the Ogasawara (Bonin) Islands where abundance 
of seaturtle (Chelonia cephalo) are reported to be caught and 
to be a common article of food. The shells, already broken 
up into large pieces, were about 2-3 centimeters thick and 
offered considerable resistance to reduction to a fine powder, 
owing to a tough skinnyt issue which coated their inner 
side. After crushing and grinding the sample, the skinny 
portion was sifted off from the hard bone-like granular 
pieces, which amounted to 85.7 °/u°f the total air dry shells. 
The two products were separately analyzed and had the 
following composition :— 
