THE JOUENAL 



OF THE 



^uchett llltrrnstnpual Chtir* 



Notes on Preparing Sections of Bone and Teeth for 

 Microscopical Examination. By J. Slade. 



(Read September 25th, 1868). 



The title of the paper wliich I bring before the Club this even- 

 ing does not imply that I should occupy your time by recapitulating 

 all that has been written upon so well worked a subject. As the 

 minute structure of bone and tooth forms a part of the studies 

 of every medical student as well as the general microscopist, 

 it happens that these structures have received a larger share of 

 attention than has fallen to the lot of other structures which build 

 up the vertebrate animal. Hence it seems that we know a little 

 more, or, at all events, can say a little more of such structures than 

 of others. 



Almost every object under the Microscope presents different 

 appearances under different powers. Such appearances are to be 

 carefully noted, and no structure can be said to be sufficiently 

 studied unless it has passed through a series of examinations, with 

 powers varying from 50 to 1,000 diameters. 



Ordinary care in the preparation may be all very well for objects 

 to be examined from with 50 to 100 diameters. More care is 

 necessary for objects from 100 to 400, but for powers higher than 

 this the delicacy of manipulation required in preparing, and the 

 amount of time consequently consumed thereby, often taxes too 

 severely the patience and time of men engaged in ordinary business. 



Having employed myself lately in the endeavour to verify for 

 my own uses some of the investigations detailed in Kolliker's 



K 



