423 



brought forward up to the present time. Additional attention 

 has also been devoted to the discussion of the principles under- 

 lying some of the processes described. In its present form the 

 book is undoubtedly well in advance of any other dealing with 

 similar subjects. D. J. 8. 



Taschenbuch der mikroskopischen Technik. Kurze Anleitung 

 zur mikroskopischen Untersuchung der Gewebe und Organe 

 der Wirbeltiere und des Menschen unter Beriicksichtigung 

 der embryologischen Technik. By Dr. A. Bohm and Dr. A. 

 Oppel. Fourth Edition : vi -f 240 pages, 2 figures in the 

 text. Munich, 1900 : R. Oldenbourg. Price 4 marks. 



There are probably many workers with the microscope to 

 whose needs this very excellent little book would be more suited 

 than the foregoing, and even to those who possess the latter it 

 would at times certainly be found useful. It is very portable, 

 and yet contains a large amount of information, probably nearly 

 three-fourths of that in the " Yade-Mecum," while in price it 

 is not much more than a quarter that of the English ^vork. 

 Although, as indicated by the sub-title, the book is mainly con- 

 cerned with the tissues and organs of the vertebrated animals, 

 including man, many of the processes described are, of course, 

 equally applicable to other animal forms. As regards "up-to- 

 dateness," it seems to be all that can be desired. 



The book is divided into two parts. In the first the various 

 processes of fixing, imbedding, section-cutting, staining and 

 mounting animal tissues for purposes of general investigation, 

 are gone into very carefully. A chapter by Prof. G. Born on 

 the methods of reconstructing particular organs, either in 

 the form of drawings or models, from a series of sections, is 

 added to this part. The second half of the book is devoted to 

 the processes which are employed in special researches on par- 

 ticular structures, such as cells, epithelium, bone, muscle, etc., 

 together with the methods connected with embryological work. 

 A very useful feature is a good list of the literature dealing w^ith 

 the subjects discussed, by means of which it is possible to refer to 

 the original papers for more detailed information upon special 

 points, should this be required. There is also a very full 

 index. 



