PREFACE TO THE THIRD EDITION. 



The advances in Normal Histology since the 

 second edition of this book was issued, in 1884, have 

 been largely in the direction of .improved technique. 

 While, therefore, in this revision such new facts in 

 the science have been embodied as seem sufficiently 

 well established and of such importance as to come 

 within the scope of this manual, the more important 

 additions will be found in the details of laboratory 

 methods. 



T. M. P. 



G. C. R 



NEW YORK, September, 1891. 



