334 



OL. 34. Pliilosophical Magazine. November 1809. 



Contents of Number 139. k 



XLIV. On the Ascent of Salmon over the Elevations in 

 the Course of Rivers, called Salmon- Leaps. By John Cark, 

 Esq., of Manchester . . - - - 



XLV. On the Breeding of Fish and the Natural History 

 of their Generation - - - - 



XLVI. On some Phaenoniena which take place in the 

 Formation of Saltpetre. By M. Longchamp 



XLVII. New analytical Researches on the Nature of cer- 

 tain Bodies, being an Appendix to the Bakeiian Lecture for 

 iSo8. By HuMPHKY Daw, Fsq., Sec, R.S. Prof. Chem. R.L 

 XLVllL Inquiry whether Naevia Materna, with which 

 Children arc sometimes born, should be attributed to the 

 Imagination o'f the Molbsr ." " 



^ XLIX. On Crystallography. By M. Hal'y. Translated 

 i^from the last Paris Edition of his Traite de Mineralogie - 

 L. An Examination of the Review which appeared in 

 the Xlllth Number of ''The Retrospect," &c., of Doctor 

 Herschel's Essay on the coloured Rings discovered by Sir 

 Isaac NwwTON - - - - - 



LI. Experiments on Ammonia, and an Account of a new 

 Method of analysing it, by Combustion with Oxygen and 

 V other Gases; in a Letter to Humphky D.wy, Esq., Sec. 

 ^^R.S. &c., from William Henry, M.D., F.R.S., V.P. of 

 ^^the Lit. and Phil. Society, and Physician to the Infirmary, 

 s^^at Mancbtbter _ . - - - 



tW LII. Observations on the Leech-worm 

 LIII. On Broom Flax - - 



LTV. On Respiration. By William Allen, Esq., F.R.S. 

 Mand William Hasledine Pepys, Esq., F.R.S. 



LV. De.scription of certain Inventions for the Improvement 

 of Naval Architecture, for increasing the Comforts of Mariners, 

 and for facilitatinjv Naval Enterprises. By Messrs. R. Tre 

 viTHiCK and K. Dickinson ... 



LVI. Notices respecting new Books 

 LV II. Proceedings of Learned Societies 

 LVIII, Intelligence and Miscellaneous Articles — Meteoro- 

 logical Table .... 394—400 



, ■■^* Communications for this Work, addressed to the Editor, at 

 (No. 1, Carey-street, Lincoln's Inn, will meet with every attention. | 



n 



m 



376! 

 37' 



379^ 



387! 

 39^1 



TAVLOa AND CO. PRlNTBRB, SHOE \KVZ, VLUT 5TR.BET, LONDON, 



