CONTENTS. 



On the Generation and other obscure Facts in the Natural 

 History of the Commov Eel 272 



Experi'ttf^nts on the Production of Sounds in Vapours. 

 By imiOT 277 



Obsirvntiois on the remarhahle Efficacy of Carrots, un- 

 der a new Moae of Application, in the Cure of Ulcers 

 and Sores 2Sl 



On the Ascent of Salmon over the Elevations in the Course 

 of Rivers, called Salmon- Leaps . . . . . . 321 



On some Pkcenome?ia wfiick take place in the Fonnaticn of 

 Sc/hpdre .. ,. 334 



New analytical Researches on the Nature of certabi Bo- 

 dies, being an Appendix to the Bakerian Lecture for 

 1808 339, 405 



Inquiry whether Ncsvia Materna, with which Children 

 arc sometime'; hen, should be attributed to the Imagi- 

 nation of the Mot har 317 



An Examination of the Review ivhich appeared in the 

 XTII//« Number of "The Retrospect," &c., of Doctor 

 Herschel's Essay on the coloured Rings discovered by 

 Sir Isaac NewtoiV 359 



Experiments on Ammonia, and an Acco^mt of a new Me- 

 thod of analysing it, by Cumbusiion with Oxygen and 

 other Gases yC9, 447 



Observations on the Leech-worm 376 



On Broom Flax 378 



On Respiration 379,415 



Description of certain Inventions for the Improvement 

 of Naual Architecture, for increasing the Comforts of 

 Mariners, andfor facilitating Naval Enterprises 387, 426 



Description of a Rotative Steam Engine, the Piston of 

 ivhich makes a co)nplete Reuolutlon at a Distance from 

 the revolving Axis 401 



Account of certain Col'Airs dug up at Pompeia. Read 

 to the National Institute the Glh of March I8O9. By 

 M. CllAMAL 4n 



or the Artina of Fegetable Acids on .llrohul, both with 



and 



