86 NAVEj ON ALGJE, FUNGI; LICHENSj ETC. 



introduction to both physiological and morbid histology. 

 The introductory chapters are devoted to a short account of 

 the best instruments and apparatus to be employed for histo- 

 logical purposes. Subsequently each healthy tissue is taken 

 up and examined. After this, diseased tissues are considered, 

 and all the principal points in microscopic investigation 

 which ought to be mastered by the medical student are 

 taken up. The descriptions of tissues and morbid products 

 are accompanied with an extensive series of illustrations on 

 wood; some of which are copied from Kolliker's great work, 

 others are taken from the ' Cyclopsedia of Anatomy/ whilst 

 a large number are original. This work will not only be 

 found useful to the medical student, but the medical prac- 

 titioner whose early education was conducted in a pre-micro- 

 scopic era will find in it a most convenient manual for 

 teaching him what are the practical points to which the 

 microscope may be applied in the practice of medicine. 



A Handy Book to the Collection of Alga, Fungi, Lichens, 

 Mosses, Diatoms, and Desmids. By Johann Nave. Trans- 

 lated by the Rev. W. W. Spicer, M.A., F.R.M.S. London : 

 Hardwicke. 



Although this little book is devoted to the subject of the 

 collection and preparation of all the lower Cryptogamia, it 

 will have a peculiar interest to the microscopist on account 

 of the especial directions given for the collection and pre- 

 servation of the microscopic forms of plants. A large pro- 

 portion of the work is devoted to the fresh-water Confervse, 

 the Diatomaceee, and Desmidiacea?, and there are few collec- 

 tors, however practised, who will not find valuable hints in 

 it. To the young collector it will prove a storehouse of 

 information, and contribute greatly to the success of his re- 

 searches. The work is accompanied by a series of plates in 

 wood, which will materially assist the beginner in working 

 at the microscopic algse. It has been translated Avitli great 

 care by the Rev. W. Spicer, and no one interested in the 

 lower forms of plants can fail to receive instruction and 

 interest from its unpretending pages. 



