HARLEY, ON HISTOLOGICAL DEMONSTRATIONS. 85 



have enabled its enterprising publishers to have offered the 

 volume for so small a sura. We most cordially recommend 

 this sixth edition of Mr. Hogg's book. 



Histological Demonstrations for the Use of the Medical and 

 Veterinary Professions. By George Harley, M.D., 

 F.R.S., and George T. Brown, M.R.C.V.S. London: 

 Longmans. 



We ought to have noticed this book earlier, but have put 

 it aside from quarter to quarter in the hope of being able to 

 write such a notice of its contents as its value and importance 

 demands. Press of other matter has, however, prevented 

 this, and we now feel that we ought not to allow another 

 issue to pass without introducing it to our readers. For 

 many years Dr. Harley has been in the habit of giving a 

 course of physiological demonstrations at University College. 

 " The observation of the facility with which objects were pre- 

 pared for examination in the presence of the class, and the 

 readiness with which the directions of the demonstrator were 

 comprehended and carried into effect by the students," sug- 

 gested to Mr. Brown " the possibility of describing in an 

 intelligible manner the method of instruction which was so 

 successful in practice.'' The volume thus commenced by the 

 pupil has been superintended by the master, and a very 

 valuable aid to anatomical research by the use of the micro- 

 scope has been the result. 



There is no doubt that the microscope is popularly regarded 

 as a very amusing instrument, and we wish we could divest 

 our minds of the feeling that a great many microscopical 

 societies regard it as anything more, but the medical student 

 should remember that it is as much his duty to use the 

 microscope as an instrument of observation as the stetho- 

 scope, the laryngoscope, or any other instrument that modern 

 science has put into his hand. Examining boards may 

 not think so, and some medical examiners would perhaps 

 be sorely puzzled to make the simplest microscopic demon- 

 stration, but, nevertheless, life and death may hang on the 

 ability of a medical man to make a microscopic diagnosis, 

 and woe to the man, however many diplomas he may possess, 

 who goes through life with '' knowledge through one entrance 

 quite shut out." 



The medical student will find this volume a thorough 



