'Elements of Applied- Microscopy. 'K Text-,,, 

 book for Beginiiers. By Charles-Edwaed 

 Amory Winslow, Instructor in Industrial 

 Microscopy and Sanitary Biology in the 

 Massachusetts Institute of Technology. Pp. 

 183, with 60 text figures. New York, John 

 Wiley and Sons. 1905. 

 This manual is an excellent example of a 

 book prepared for a definite purpose and as 

 the result of experience in an institution 

 where independent work and special ideas 

 have a prominent place. 



, As the author states in his preface the book 

 'Moes not profess to compete on the one hand 

 with monographs or on the other with the pop- 

 ular works on microscopy. It is, however, 

 specifically intended for the class in industrial 

 microscopy for second year students in chem- 

 istry and biology at the Massachusetts Insti- 

 tute of Technology. The object of the course 

 IS to give facility in the manipulation of the 

 microscope and. an acquaintance with thei 

 scope of its practical application. 



The first four chapters consider the micro- 

 ^scope and its accessories, and the other eight 

 ''i3hapters deal with the starches, adulterations 

 ft food and drugs, textile fibers, paper, medi- 

 fcine and sanitation, forensic microscopy, 

 inicrochemistry, petrology and metallurgy. 



Each subject is dealt with in a general 

 manner to give the student the principles and 

 the point of view. Exercises are then given 

 to illustrate the methods necessary for the 

 elucidation of the questions which arise, in 

 actual practise. 



The book is well conceived and satisfac- 

 torily worked out. The statements are usu- 

 ally clear and concise. As planned by the 

 author, it is an introduction to the subject, 

 and was designed for use by a teacher pos- 



