The Microscope 



AND ITS RELATION TO 



Medicine and Pharmacy. 



WHOLE NO. 1 1 } Ann Arbol-, December, 1882. No. 5 



CONTENTS. 



TAGE. 



Original Communications. 



The History of the Microscope. By 



J. W. Crumbaugh, M. D 145 



The Microscope and Medicine. By 



Geo. E. Fell, M. D 149 



Boldo Leaves. By Mrs. L. R. 



Stowell 157 



How to Preserve Urinarv Deposits. 



By C. H Stowell ". 161 



Micrococci By J. M . Adams 162 



PACK 



The Preparation of Crystals. By A. 



G. Moore Ifrt 



The Microscope Among Infinities. 



By J. M. Adams 164 



How to Turn Over Small Objects. 



By J. M. Adams - 165 



Romeyn Hitchcock, Journal by 166 



Soeiety Proceedings 167 



Editorial Department 168 



Items 170 



Reviews 17!J 



IHE HISTORY OF THE MICROSCOPE AND ITS ACCES- 

 SORIES. 



BY J. W. CRUMBAUGH, M. D. 

 FOURTH PAPER. 



MR. GREY found that when the water thus employed contained 

 animalcules, that they appeared much larger than if viewed 

 beyond the globule. Montucla (Vol. 2, p. 610) gave as an expla- 

 nation for this, that the hinder part of the globe acted as a concave 

 mirror, provided the object was located below that surface and the 

 focus, and it is thus objects are magnified 3^ times greater than if 

 placed outside the globule. 



Micrometers were added to microscopes during this era. Mr. 

 Gascoigne, in 1640, first produced one. Gascoigne measured his 

 object by the approach of two straight edges ground sharp in the 



