ADVERTISEMENT. 



The First Volume of the Records of General Science 

 being now completed, it appears not unappropriate to take 

 a retrospect of its contents. 



These may be classed under four heads : 



1. Original communications. Of this class of papers the 

 volume contains no less than twenty eight ; three of which 

 are descriptive, upon a new plan, of calico-printing, one of 

 the most . important and beautiful manufactures in this 

 country. Eight are devoted to accounts of 12 minerals, 

 of 8 of which, viz., Thulite, Crucilite, Kirwanite, Bysluite, 

 Calcareo-sulphaie of Barytes, Baryto-calcite, Sulphato-car- 

 bonate of Barytes, Bi-calcareo Carbonate of Barytes, the 

 chemical composition has never been previously published ; 

 for with the exception of Thulite their discovery is for the 

 first time announced. The 3 remaining minerals are 

 Wollastonite, Gadolinite and Wolfram. In Gadolinite, an 

 earth has been detected which was not observed by the 

 only analyst who had previously subjected it to examina- 

 tion, although his results are received by many with 

 implicit reliance. In the same paper an elaborate exami- 

 nation of the salts of yttria and cerium is likewise detailed. 

 Two new fossil Crustacea are described in another original 

 communication, while two papers are devoted to an 

 interesting investigation into the subject of spirits, and 

 two into that of sound. 



2. Papers and extracts from Foreign Journals. These 

 comprehend the subjects of Biography, Chemistry Minera- 

 logy, Geology, Botany, Physics, Natural History, Physio- 

 logy, Medicine, Statistics. 



3. Analyses of Books. The object in this department 



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