112 



THE MICROSCOPE. 



[April, 



For further illustrations of this apparatus and its use we refer 

 the readers to Professor S. H. Gage's new work, entitled "• The 

 Microscope and Histology," to which we are indebted for the 

 nho\'e.-*-America^i Mo7ithly Microscopical Joiiriial fo?' April. 



Prof. Sayre's New Pocket Microscope. — In the Micro- 

 scopical Jo7rr?ial for April will lie found a full description of this 

 ino-enious device for holding a flower and the lens in one hand 

 while having the other free to use for dissecting or for any other 

 purpose. 



We are not aware that provision has been made for manufac- 

 turing this lens as yet, but we feel sure that " there is money in 

 it " for whoever can put it in the market at a low price. 



PVBLICATIONS 



Modern Treatment of Headaches. By Allan McLane Hamil- 

 ton, M. D. Detroit: George S. Davis. i6mo, pp. 132. 

 Price, 25 cents. 

 In a verv pleasing way the author treats i7i cxtenso of head- 

 aches in general — of congestive, ansemic, organic (due to struc- 

 tural changes within the brain), toxic (lithasmic, urasmic, mala 

 rial, etc. ) , neuralgic and neurasthenic headaches. Much valuable 

 information has here been compressed into a small space, but 

 without giving undue prominence to any one form. The author 

 pays special attention to the treatment, and has succeeded in pre- 

 paring one of the most important volumes that have recently ap- 

 peared in the " Physicians' Leisure Library." — A. C. S. 



