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L us J 



XXXI. jSIhliees respecting New Books. 



1 HR Vh'dosnphical Transactions of the Boyal Society of 

 Lundon for the Yiar \BQ\, Part I L, contain: — Analytical 

 ENpurinicnts and Observations on Lac. By Charles Hat- 

 chett, Esq. F.R.S.— On the Integration of certain diflcren- 

 fial Expressions with which Problems in physical Astro- 

 nomy are connected, he. By Robert Woodhoiisc, A.M^ 

 E.R.xS. Fellow of Ciiius College. — Observations on Basalt, 

 r-.ul Oil the Transition from the vitreous to the stony Texture, 

 wlxich occlirs in the gradual Refrigeration of melted Basalt; 

 witli some jreological Remarks. In a Letter from Gregory 

 Watt, E^j.^to ih^e Jiight Hon. Charles Greville, V.P. R.S. 

 —An Analysis of the magnctical Pyrites; with Remarks on 

 Sf)meof theotherSulj)hurets of Iron. By Charles Hatchetlj 

 Kscj. F.R.S. — Remarks oi; the voluntary Expansion of the 

 Skin of llie Neck, in the Cobra de Capello, or hooded Snake 

 Of the East Indie.-^. By Patrick Russell, M.D. F.R.S. With 

 a Description of the Structure of the Parts which perform 

 (hat Oilice. By Everard Home, Esq. F.R.S.-^-Coutinua- 

 tion of an Account of the Cljauges that have happened in 

 llie rtjative Situation of double Stars. By William Her- 

 schcl, LL.D. F.R.S. ^^Observations on the Change of some 

 Af the proximate Principles of Vegetables into Bitumen ; 

 with Analytical Experiments on a peculiar Substance which 

 is luund with the Bovey Coal. By Charles Hatchett, Esq. 

 F.R.S. — On two Metals found in the black Powder remain- 

 ing after the Solutioil of Platina. By Smilhson Tennant, 

 Y.<i\. F.R.S. — On a new Metal found in crude Platina. By 

 Wdliam Hyde Wollaslon, M.D. F.R.S. 



The Transactions of the Liimean Society 6fLo!ido7!,\\A.Vll, 

 contain: Charter of theLinnean Society of London. — Bye- 

 laws of the Society. — Patent of Armorial Ensigns. — A new 

 Arrau'/ementof tiieCcnusAloe, with a chronological Sketch 

 of the j)r()trressive Knowledge of that Genus, and of other 

 succulent Genera. By Adrian Hardy Haworth, Esq. F.L.S. 

 — On the Germination of the Seeds of O^rchidcie. By 

 Richard Anthony Salisbury, Esq.. F.K.S.& L.S. — Account 

 of the Tusseh and Arrindy Silk- Worms of Bengal. By 

 William ]{<)xburgh, RED. F.L.S. — Description of the Bri- 

 tish Lizards; and of a new British Species of Viper. By 

 Revett Shcppard, A.B. F.L.S. — Description of Bos Fron- 

 talis, a new Species, from India. By Aylnier Bourk;^ 

 Lambert, Esq. i'.R.S. V. P. L.S.— Description of the Esox 

 o Saurus. 



