'21G .• Notices rcC'pcctiv.g Neic Books. 



Upsal: — The E/ghfJt Volume of the Memoirs of the Eoijal So- 

 ciety has just appeared, under the title of " Nova Acta llc- 

 gi.e Societatis Scientiarum Upsaliensis." 

 The followhi<5 are the papei's on scientific subjects •.—Petri- 

 fxata telluris Suecancc, by Dr. Walilenberg. — De rcductione 

 quantitation imaginarianim, by the Chev. de Nordmark. — Cole- 

 optera capensia aritcnnis fusiforwibus, by M. Thunberg. — 

 Ovis polijceratce variefates, by the same. — Aluriii ires 7WVfC 

 species, by the same. — Gothlandice plantts rariores, by MM. 

 Rosen and Wahlenberg. — Monographia chlythrce, by Dr. Fors- 

 berg. — De Gjjrinis commcntatio, by the same. 



We have great satisfaction in announcing the publication 

 of the 2nd Part (completing the First Volume) of the Transac- 

 tions of the Cambridge Philosophical Society, which has lately 

 besn instituted for the purpose of promoting scientific inquiries, 

 a!id of f.cilitating the communication of facts connected with 

 the advancement of Philosophy and Natural History : — The 

 f jilcwing are the contents : 



Part 1. — On Isometvical Perspective: by Professor Parish. — On 

 certain remarkable Instances of Deviation from Newton's Scale in 

 the Tints developed by Crystals, with one Axis of Double Refraction 

 on Exposure to polarized Light : by J. F. W. Herschel, Esq. — On 

 the Rotation impressed by Plates of Rock Crystal on the Planes of 

 Polarization of the Rays of Light, as connected with certain pecu- 

 liarities in its Crystallization: byj. F. W, Herschel, Esq. — On the 

 Chemical Constituents of the Purple Precipitate of Cassias : by 

 Dr. E. D. Clarke. — Observations on the Notation employed in the 

 Calculus of Functions: by C. Babbage, Esq — On the Reduction 

 of certain Classes of Functional Equations to Equations of Finite 

 Differences : by J. F.W. Herschel, Esq. — On the Physical Structure 

 of those Formations which are immediately associated with the 

 Primitive Ridge of Devonshire and Cornwall : by the Rev. Professor 

 Sedgwick. — On the Laws according to which Masses of Iron in- 

 fluence Magnetic Needles: by S. H. Christie, Esq. — An Account 

 of some Fossil Remains of the Beaver found in Cambridgeshire : 

 by J. Okes, Esq. — On the Position of the Apsides of Orbits of 

 great Excentricity : by W. Whewell. Esq. — On a remarkable De- 

 posit of Natron found in Cavities in tlie Tower of Stoke Church 

 in the Parish of Hartland, Devonshire: by Dr. E.D.Clarke. 



Part H. — Analysis of a native Phosphate of Copper from the 

 Rhine: by F. Lunn, Esq. — Upon the regular CrystalHzation of 

 V/ater, and upon the Form of its primary Cr3fstals: by Dr. E. D. 

 Clarke. — On the Application of Hydrogen Gas to produce amoving 

 Power in Machinery ; with a Description of an Engine which is 

 moved by the Pressure of the Atmosphere upon a Vacuum caused 

 by E.xplosions of Hydrogen Gas and Atmospheric Airs: by Rev. W. 

 ^ccil. — On a remarkable Peculiarity in the Law of the extraordi- 

 nary 



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