



THE QUARTERLY 



JOURNAL OF SCIENCE. 



CONDUCTED BY 



Sir W, FAIRBAIRN, Bart., F.R.S.; WILLIAM CROOKES, F.R.S.; 

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



AND 



JAMES SAMUELSON, 



OF THE MIDDLE TEMPLE, BARRISTER-AT-LAW, 



Editor. 



VOLUME VII. 



LONDON: 

 LONGMANS, GREEN, and CO., PATERNOSTER ROW. 



Paris : i Leipzig- : 



FRIEDRICH KLINCKSIECK. ALFONS DURR. 



MDCCCLXX. 



