Fossil Bones and Pscudo- Coprolites of the Crag. 99 



Water and organic matter 



Chloride of sodium and sulphate 

 of soda 



Carbonate of lime . 



Carbonate of magnesia 



Sulphate of lime 



Phosphate of lime . 



Phosphate of magnesia 



Perphosphate of iron 



Phosphate of alumina 



Peroxide of iron 



Alumina 



Silicic acid, with fluoride of cal- 

 cium, and loss 



I. 



ir. 



Mean.* 



6-240 



6 -124 



6- 1820 



traces. 



traces. 



traces. 



23-640 



23-708 



23-6740 



none. 



none. 



none. 



I '740 



1-801 



1 * 7705 



60*726 



60-813 



60-7695 



a little. 



a little. 



a little. 



3 • 980 



4-135 



4* 0575 



a little. 



a little. 



a little. 



2-094 



1 -894 



1*9940 



none. 



none. 



none. 



1 -oSO 



1-525 



1 • 5525 



100" 



100' 



100- 



The proportion of nitrogen amounted to 0*0826 per cent. 



^. Below are given the results of my analysis of another sauno- 

 coprolite, very similar in appearance to the preceding, which was 

 likewise obtained from Lvme Regis. 



Density, at 60° F., 2 -799. 



It was composed in the 100 parts of- — 



Water .... 

 Organic matters 

 Carbonate of lime 

 Carbonate of magnesia 

 Sulphate of lime 

 Phosphate of lime | 

 Phosphate of magnesia J 

 Perphosphate of iron . 

 Phosphate of alumina . 



Fluoride of calcium 



Silicic acid .... 



3-976 

 2-001 

 28-121 

 0-423 

 2-026 



53-996 



. 6*182 

 . 1-276 

 j Quantity not determined,. 

 I but very appreciable. 

 . 0-733 



7. A fragment of a large coprolite, which I bought from a 

 dealer in minerals at Clifton, was found to contain — 



Water and organic matter . . . . 9-3616 



Chloride of sodium, .... traces. 



Carbonic acid ...... 15-9348 



Sulphuric acid ...... 1*2735 



Phosphoric acid ..... 22-2275 



Lime and magnesia ..... 44-4695 



Oxides of iron and manganese, with alumina 2*4549 



Fluoride of calcium 1*3679 



Silicic acid 2*1106 



99-2003 



The person, from whom I purchased this specimen, could not 

 inform me from what locality it originally came. 



* In the first of these analyses, the phosphoric acid was estimated by M. Schultze's 

 method, as perphosphate of iron ; in thtf second, as phosphate of lead. 



h2 



