THE QUARTEELY 



JOURNAL OF SCIENCE. 



CONDUCTED BY 



WILLIAM FAIRBAIRN, F.R.S.; WILLIAM CROOKES, F.R.S.; 

 ROBERT HUNT, F.R.S.; R. WOODWARD, F.G.S., F.Z.S.; 



AND 



JAMES SAMUELSON, Editor. 



VOLUME VL 



Wiit\i |Uustr;ttious on .^tonc antr Sttloob. 



LONDON: 

 LONGMANS, GREEN, and CO., PATERNOSTER ROW. 



Paris : i Leipzig- : 



FRIEURICH KLINCKSIECK. | ALFONS DURE. 



MDCCCLXIX. 



