New Publications. 205 



cases in which it must be employed, he points out those parts 

 in which incision is superfluous ; as for example, in the opera- 

 tion of crural hernia, he discusses the propriety of the divison 

 of Gimbernat ligaments, and avails himself of this opportunity 

 to point out the minute structure of this ligament : Far from 

 being so simple as is usually supposed, according to him, it is 

 formed by the superpositions of many fibrous laminae, which 

 are the prolongations of the tendinous extremities of different 

 muscles. The author in concluding this summary insists on 

 an anatomical point which he has already displayed in several 

 memoirs which have been read to the Academie des Sciences, 

 viz. upon the crossing of these tendinous fibres, and their inter- 

 lacement upon the mesial line of the abdomen. 



NEW PUBLICATIONS. 



I. Levys Work on Mineralogy. 



We have the pleasure of announcing that the printing of an im- 

 portant work, which the scientific world owes to the liberality of 

 Mr H. Hewland of London, is now nearly finished, and that early 

 next year it will appear in three volumes octavo, with a volume 

 of 83 plates, representing crystals, with descriptions drawn up by 

 the late celebrated Abbe Hauy, under the title, " Description dune 

 Collection de Mineraux, appartenant a Monsieur Charles Hampden 

 Turner, forme par Mr Henri Heuland, et decrite par Mr Armand 

 Levy, en 3 vols. 8vo, avec 1 volume de 83 planches, &c." \ 



2. Micographia : containing Practical Essays on Reflecting Solar, 

 Oxy- Hydrogen Gas Microscopes, Micrometers, Eye-Pieces, SfC* 

 By C. R. GORING and ANDREW PRITCHARD, Esqrs., 1 vol. 8vo, 

 pp. 231. London, Whittaker and Company. 

 In this Journal we have frequently directed the attention of na- 

 turalists to the important and beautiful discoveries made in our 

 time by means of the microscope. The investigations of Ehren- 

 berg on the Infusoria and on fossil organic remains ; the new re- 

 searches on the organic elements, and intimate structure of animal 

 bodies, by G. R. Treviranus; the discoveries of Von Baer, Rathke, 

 Purkinje, Wagner, Valentine, Miiller, Retzius, Dujardin, Brown, 

 Bauer, and other distinguished explorers of the minuter arrange- 

 ments in the organic kingdom ; and the curious observations of 



