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PREFACE 



This volume has been prepared with a view of aiding the 

 instructors and students of the laboratory classes which are 

 under my direction. 



It is also presented with the hope that it may be useful to 

 other instructors. 



Again, students often wish to continue microscopical work 

 during the interim of college attendance ; to such, it is my 

 belief, these pages will have some value. 



Still again, very many practitioners, not having had, during 

 pupilage, advantages equal to those provided by the modern 

 laboratory equipment, wish to acquire more knowledge of 

 microscopy, for its value in practical medicine. To such 

 workers, also, I desire to be useful. 



So much technique has been introduced as has been found 

 to be of absolute necessity, and no more. The processes for 

 the preparation and exhibition of tissues are generally simple 

 and always practicable. 



In the description of organs, I assume that the student has 

 a fair knowledge of gross anatomy, but knows nothing of his- 

 tology. The scheme or plan of the structure is first described 

 using diagrams where requisite to clearness after which the 

 mode of preparing the sections is indicated, and, under prac- 

 tical demonstration, every histological detail tabulated in proper 

 order. The ^drawings will, I believe, aid in the recognition of 

 such elements in the field of the microscope. 



The illustrations are exact reproductions, by photography, 

 of my own pen - pictures ; and distinction must always be made 

 between the drawings which are schematic used to emphasize 



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