16 THE MICROSCOPE 



not give so good results. It is hardly necessary to give a list of 

 the slides best suited for this mode of exhibition ; they will be 

 selected by any microscopist who keeps in mind the conditions. 

 In conclusion, let me repeat my hope that my paper will 

 induce other members and readers to offer information on this 

 subject. 



^be fIDicroecope in flDcMcine^ 



By J. B. Jeaffreson, M.R.C.S. Lond., L.S.A., &c.* 



IN this present utilitarian age, nothing is thought much of unless 

 it can prove its usefulness, and I beHeve many would feel 

 more interest in microscopic work if they realised the fact 

 that the microscope is not only a scientific toy, but that it is 

 actually of great use in the elucidation of truths which promote 

 the interests and welfare of mankind. I thought, therefore, it might 

 be interesting if I attempted to show some of the uses of the 

 microscope in medicine — how it assists us medical men in our 

 battle with many of the ills of life to which our human flesh is 

 heir. My only difficulty is the vastness of the subject I have 

 chosen, and the impossibihty of compressing into a single paper 

 what would rather occupy a long course of lectures. 



The subject naturally divides itself into the three following 

 branches of medical study : — first, the uses of the microscope in 

 Physiology, or the study of the science of life in health ; secondly, 

 in Pathology, or the study of the different organs and tissues in 

 disease ; and thirdly, in Practice, as it is useful to us medical men 

 in our daily treatment of disease. 



It will be readily understood that disorders cannot be pro- 

 perly studied in the absence of the knowledge of the means 

 by which healthy action is carried on, so that before commencing 



* Read at a meeting of the Highbury Microscopical and Scientific Society, 

 June 23rd, 1881. 



