iV COM'EKTS. 



PHYSICS, MATHEMATICS, CHEMISTRY, MECHANICS, &c. 



Page 

 Frof. E. Kellog-g on tlie Passage of Lig-htning-, - - - - 84 



A new Method of Resolving Equations of the third and fourth de- 

 gree ; by Alexander C. Twining, ----- 86 



Formula for the Preparation of the Sulphate of Rhubarb, - - 91 

 Mr. Patten's Air-Pump, Gazometer, and Balance Beam, - 92 



Prof. Wallace in Reply to the Remarks of B. upon his paper on Al- 

 gebraic Series, --------- 98 



On the asserted Acceleration of the Motion of Water-Wheels, 

 duriug the Night and in Winter, ------ 104 



Rev. E. Hitchcock's Notice of " The new method of determining 

 Ihe Longitude by the Culmination of the Moon and Stars," with 

 " a list of Stars applicable to the purpose for the year 1825, bj^ 

 Francis Baiiy, Esq. F. R. S. and L.S." - - - - - 107 



Remarks on Prof. Wallace's Reply to B. . - _ - 293 



J^ew Demonstrations on the Theory of the Overshot Water- Wheel, 



by A. B. Quinby, - . - 304 



On high and low pressure Boilers, by A. B. Quinby, - - 313 

 On the Spiral of Archimedes, by A. B. Quinby, - - - - 316 

 ]\Ir. Quinby on Crank Motion, in Reply to the Remarks of the Au- 

 thor of a Review in the North American, _ - _ - 317 

 On the Action of Iron in Motion on Tempered Steel, by MM. Da- 

 vier, and CoUadon, -------- 304 



Mr. Patten's Air Pump, 327 



Analysis of several Minerals, by Prof. Gmelin, of the University of 



Tubingen, 329 



On Light ning-l^ods, by Jeremiah Van Rensselaer, M. D. - 331 



MISCELLANEOUS. 



Notices of the Agriculture, Scenery, Geology, and Animal, Vegeta- 

 ble, and Mineral Productions of the Floridas, and of the Indian 

 tj'ibes; by James Pierce, Esq. ------ jjg 



Remarks on some Phenomena of Moving Rocks, by Rev. J. Adams, 136 

 Remarks on the Moving of Rocks by Ice; by J. Wood, Esq. - 144 

 Remarks additional io the Review of Conj^beare and Phillii3s's Geol- 

 ogy of England and Wales, - - - - - - 146 



Botanical Fetes in France, by Prof. J. Griscom, _ . - 154 



Extracts from Mr. Maclure's Letters to the Editor, - - 157 



Description of Minerals from Palestine, hj Prof. Hall, - - 337 



Notice of a Meteoric Stone which fell at Nanjemoy, Marjdand, 



February 10th, 1825, by Dr. Samuel D. Carver, - - - 351 

 Notice of a Cave containing Bones in Lanark, Upper Canada, by 



John I. Bigsby, M. D. ..-..-. 354 



Notice of Prof. Eaton's Geological Survey, - _ - _ 355 



On the Infmite Divisibility of a Finite quantity of Matter, by Shel- 

 don Clark Esq. -.--.--- 35*3 

 On the Origin of Ergot, by Gen. Martin Field, - - - - 359 



Borne Experiments and Remarks on several Species and Varieties of 

 Cinchona Bark, by George AV. Carpenter, - . - 363 





