94' REVIEWS. 



Another interesting point discussed in Fray's work is the 

 structure of the gastric glands and their peculiar forms of 

 cells — the " Hauptzellen," or "chief cells" of Heidenhain 

 {adelomorphous cells of Rollett) ; and " Belegzellen/' or 

 " investing cells," delomorplwus , of Rollett (strangely trans- 

 lated " overlaying cells " by Mr. Barker). 



Heidenhain's observations on the differences seen in these 

 cells in periods of rest or activity of the gland, are one of the 

 most important connecting links between physiology and 

 pure histology. 



It is, of course, impossible to criticise a work of this kind 

 in detail. We can only say that other parts seem to be as well 

 brought up to the date of publication as those which we have 

 mentioned. 



In conclusion, we must congratulate Mr. Barker on the 

 accuracy and fluency of his translation, and on the faithful 

 reproduction of the German woodcuts. As we have before 

 complained of the costliness of the American translation of 

 ' Frey on the Microscope,' we feel bound to state that this 

 work, though very considerably larger and containing nearly 

 twice as many woodcuts, is published at a lower price, and 

 is at least equal, if not superior, in mechanical execution. 



Outlines of Practical Histology. By William Rutherford, 

 M.D., Professor of the Institute in the University of 

 Edinburgh. London, 1875. 



Since the first edition of this little work appeared in the 

 form of notes in the number of this Journal for January, 

 1872, we are relieved from the necessity of subjecting them 

 to any detailed criticism. It is right to say, however, that 

 the original notes have been considerably expanded and im- 

 proved, as well as made more useful by the introduction of 

 figures. In its present state. Professor Rutherford's iro- 

 chure forms an excellent guide for class work, and will be 

 useful even for the solitary student who is bent on seeing 

 things for himself. It has the great merit, for a scientific 

 text-book, of being useless in the absence of the objects de- 

 scribed : a quality which will render it quite unfit for the 

 crammer or the crammed. 



