16 Mr. Middleton's Analysis of Recent and Fossil Bones. 



Fourth. Fossil camel of the Sewalic. 



per cent. 

 Phosphate of lime . . 62*35 

 Carbonate of lime . 25*23 

 Fluoride of calcium . 11*16 

 Peroxide of iron . . '76 



Fifth*. Part of a fossil alligator. Sewalic. 



per cent. 



Phosphate of lime 75*79 



Carbonate of lime 7'40 



Phosphate and peroxide of iron 8*67 

 Fluoride of calcium .... 4*85 

 Carbonate of magnesia . . . 1*76 



Silica 1*50 



The above are analyses of a few of several specimens fur- 

 nished to me by Dr. Falconer, a gentleman whose love of 

 science and perseverance in its cause are only equalled by the 

 cordiality with which he encourages and assists others en- 

 gaged in scientific pursuits. 



Sixth. Iguanodon of the Wealden. 



per cent. 



Phosphate of lime 35*35 



Carbonate of lime 19*59 



Fluoride of calcium 11*51 



Insoluble silicates 8*75 



Chloride of sodium 1*26 



Soda 2*50 



Magnesia and chloride of magnesium . 3*50 

 Alumina and peroxide of iron . . . 691 

 Organic 10*71 



Seventh. Recent shells. 



{)er cent. 



Carbonate of lime 99*01 



Chloride of sodium *20 



Fluoride of calciumfj tissue and loss . '79 



Eighth. Sea urchin of the miocene from Malta. 



per cent. 

 Carbonate of lime . . 98*12 

 Chloride of sodium . *48 

 Insoluble silicates . . *80 

 Fluoride of calcium . '55 

 For the interesting subjects, of which the following are ana- 



* The state of this fossil differed essentially from that of the foregoinjr, 

 they being soft and friable, that hard and refractory, and having quite a 

 mineral character. 



f The quantity too small for estimation. 



