4884 Notices of New Books. 



Zannichellia, &c, among which are its haunts. A second species, 

 Phytobius leucogaster, of which also specimens were exhibited, and 

 which was taken by Mr. Haliday at Holywood, has the like structure 

 in some degree, and the two have been separated from Phytobius by 

 Redtenbacher, as the genus Litodactylus, but, as Suffrian has 

 remarked, there is considerable difference between these two species, 

 while a third, P. velatus, has the aquatic character much more 

 marked than either. 



* Quarterly Journal of Microscopical Science, including the Trans- 

 actions of the Microscopical Society of Landon? Edited by 

 Edwin Lankester, M.D., F.R.S., F.L.S., and George Busk, 

 F.R.C.S.E., F.R.S., F.L.S. London : Highley. No. XL, dated 

 April. 110 pp. demy 8vo. letter-press and 2 plates; price 4s. 



Although not bearing a " Natural-History " title this periodical 

 has strong claims to be regarded as an emanation from our science. 

 It is a kind of compound of the late Mr. Cooper's ' Microscopic 

 Journal' and the admirable 'Transactions of the Microscopical 

 Society.' Its contents will be given in future numbers of the 

 ' Zoologist,' with a view to making it known among a larger body of 

 naturalists than are at present aware of its existence. The contents - 

 of the present number are as under : — 



' On the Development of Purpura Lapillus.' By William B. Car- 

 penter, M.D., F.R.S., F.G.S., President of the Microscopical Society. 



' On the Occurrence among the Infusoria of peculiar Organs 

 resembling Thread-cells.' By George J. Allman, M.D., F.R.S. 



' Snow Crystals in 1855.' By James Glaisher, F.R.S. 



1 An Investigation into the Structure of the Torbanehill Mineral, 

 and of various kinds of Coal.' By John Hughes Bennett, M.D. 

 F.R.S. E. [Extracted from the ■ Transactions of the Royal Society 

 of Edinburgh.'] 



' Observations on Noctiluca (miliaris ?).' By Dr. W. Busch. 

 [Translated from ' Beobachtung. lib. Anat. u. Entwickl. einiger 

 wirbellosen Seethiere,' p. 103. Berlin, 1851.] 



' Researches on the Development of the Microscopic Algae and 

 Fungi.' By Dr. T. Cohn. [Translated from the German.] 



Reviews: — 'Principles of Comparative Physiology;' by W. B. 

 Carpenter, M.D., F.R.S. ' The Microscope, and its application to 

 Vegetable Anatomy and Physiology;' by Dr. Hermann Schacht; 



