CONTENTS 



OF THE 



QUARTERLY JOURNAL, 



No. XXXIX. 1/ 



ART. PAOfi 



I. On the Means by which Crabs throw off their Claws. By Dr. 



Mac Culloch 1 



II. On the Fogs of the Polar Seas. By George Harvev, Esq., 



F.R.S., L. andE 11 



III. On One of the Causes of the Movements of the Barometer, and 

 of the South and West Winds. By Marshall Hall, M.D., 

 F.R.S.E, &c. &c 14 



IV. Description of an Instrument for destroying- a Stone in the 

 Bladder. By J. B. Griffiths, Esq 21 



V. Outlines of Geology, being the Substance of a Course of Lec- 



tures on that Subject, delivered in the Amphitheatre of the 

 Royal Institution of Great Britain, by William Thomas 

 Brande, F.R.S., Professor of Chemistry in the Royal In- 

 stitution, &c %i 



VI. On a peculiar Appearance exhibited by Hoar Frost. By J. 

 Mac Culloch, M.D, F.R.S.E , &c 40 



VII. A Letter from A. Copland Hutchison, Esq., to Sir 

 Everard Home, Bart., containing an Account of a successful 

 Case of the High Operation for the Stone .... 44 



VIII. On Calcareous Cements. By John White, Esq. . . 50 



IX. Remarks on Phytolacca Dodecandra, or, the Mustard Tree of 

 the Scriptures. By John Frost, F.L.S., Member of the 

 Royal Institution, &c. . ' . . t i * . 57 



