1821.] New Scientific Books, 471 



■'+ 10 oxygen, protoxide. 



Gold 299<! t fi "uF^"' P'=''7"'f,- . . 

 ^ ' 4f4< chlorine, protochloride. 



132 chlorine, perchloride. 



{; 



M. Pelletier draws the following conclusions from the various expe- 

 riments which he has made on this metal. 



1. Gold ought to be considered as an electro-negative metal, /. e. as 

 a metal forming oxides, which tend rather to act as acids than as bases. 



2. The oxides of gold cannot form true salifiable compounds with 

 the acids. 



3. The peroxide of gold will unite to the alkalies and other metallic 

 oxides, forming combinations which possess peculiar properties. 



4. Gold in solution in aqua regia is in the state of perchloride, and 

 the supposed triple salts of gold are only mixtures in which the gold is 

 still in the state of perchloride. 



5. Gold unites to iodine, forming a compound of which the propor- 

 tions are constant, and easily determinable. 



6. According to the proportions of the iodide of gold, those of the 

 oxides and chlorides may also be ascertained as given in the Memoire. 



7. The vegetable acids and salts have different actions on the chlo- 

 rides and oxides of gold. Amongst them may be distinguished the 

 oxalic acid and the oxalates, because their action is very peculiar, and 

 supports the opinion of M. Dulong on the oxalic acid. — (Annales de 

 Chimie et de Physique.) 



Article XII. 

 NEW SCIENTIFIC BOOKS 



PREPARING FOR PUBLICATION. 



The Parent's Medical and Surgical Assistant, intended for the use of 

 the heads of families, parochial clergymen, and others, by Thomas 

 Ayre Bromhead, MB. Christ's College, Cambridge. 



Dr. Paris and John S. M. Fonblanque, Esq. Barrister at Law, have, 

 in considerable forwardness, a work, to be comprised in one volume, 

 8vo. and entitled ** Medical Jurisprudence.'* It will comprehend 

 medical, chemical, anatomical, and surgical investigations, applicable 

 to forensic practice, for the instruction and guidance of coroners, 

 magistrates, counsel, and medical witnesses, with a copious appendix 

 of statutes, cases, and decisions. 



Mr. Gideon Mantell's Outlines of the Geology of the South-eastern 

 Division of Sussex, will soon be published in royal 4to. with numerou,¥ 

 engravings. 



A Treatise on Scrofula, its Nature, Treatment, and Effects ; also, 

 the alteration produced by it in the structure of all the different parts 

 of the body, with special reference to its connexion with spinal curva- 

 ture, diseases of the joints, affections of the glands. To which is 

 added, an Account of the Ophthalmia, so long prevalent in Christ's 

 Hospital. By E. A. Lloyd, RCS. &c. &c. in one volume, 8vo. This 

 Work obtained the Jacksonian Prize in 1818. 



