DIATOMACE/E. 



BY 



PROF. A. MEAD EDWAKDS, M. D. 



CONTENTS. 



Directions for Collecting, Preserving and Transporting Speci- 

 mens of the Diatoinacea', - - - - 



How to Prepare Specimens of Diatomaceio for Examination and 



Study by means of the Microscope, - » - -18 



