CHOICE OF OBJECTIVES FOR REGULAR WORK. 203 



conjunction therewith the aid of medical chemistry is 

 constantly sought, especially in the diagnosis of renal 

 diseases. Work of this description is continually on 

 the tapis " all the year round." In addition to this we 

 use the instrument as a necessary aid in our daily lec- 

 tures, and for the private instruction of students at the 

 college on matters pertaining to our Chair of Histology 

 and Microscopy. Besides these duties we have more or 

 less private instruction entirely outside of the college 

 to attend to. The range of work then to be accom- 

 plished is by no means a narrow one, and anything in 

 the way of instrumentation that would assist either 

 teacher or pupil will find at all times in my laboratory 

 a ready market. 



We thus state the character of the work we have in 

 hand, and also the instrumentation employed for its ac- 

 complishment; perhaps a leaf or two from our daily 

 practice may prove acceptable, and with this hope we 

 proceed : 



We have said that a large amount of our work is- 

 over urinary deposits. For this purpose we use the 

 " histological " stand of Mr. Zentmayer, the tube short 

 and the stage level. Nine physicians out of ten engaged 

 in similar examinations use their instruments in an in- 

 clined position, covering their preliminary mounts, 

 absorbing the superfluous moisture with a bit of blot- 

 ting paper, employing, too, an objective as high as the 

 one-fourth, or perhaps higher. Now nine-tenths of all 

 work of this description can be accomplished with a wide 

 angled inch or two-thirds, and by keeping the tube short 



