1898.] MICROSCOPICAL JOURNAL. 2l6 



ibility to all kinds of work. The first condition has 

 been met by using metal in the construction, thus obvi- 

 ating shrinking, swelling and warping, inherent quali- 

 ties of wood. The second and third requirements have 

 been met in the mechanical construction. 



With this apparatus it is possible to work in the verti- 

 cal or horizontal position or at any inclination. The ad- 

 justment is easily and quickly made by loosening the 

 binding nut between the friction plates aud turning the 

 bed plate to the desired position. The bed plate can be 

 rotated on the horizontal axis to get the advantage ot 

 room and direction of light without moving the stand 

 upon its legs. When the bed plate is turned to the hori- 

 zontal the top of the bed plate is 33 inches from the 

 floor ; too low to work with comfort. By raising the ele- 

 vating post the bed plate may be carried up to the height 

 of five feet. This adjustment makes it possible to al- 

 ways have the work at a comfortable height, either in 

 sitting or standing position, and regardless of the stature 

 of the operator. 



Diagnosing Yellow Fever. 



In an official hand-book on yellow fever, its nature, di- 

 agnosis, treatment, and prophylaxis, which has just been 

 prepared by the Surgeon-General's Office, Acting As- 

 sistant Surgeon John Guiteras says regarding the use of 

 the microscope : 



"An erroneous belief has prevailed throughout the 

 South, especially among physicians who were not practi- 

 cal microscopists, that the microscope should be an im- 

 portant aid in diagnosis of yellow fever. It appears that 

 poorly prepared abstracts from the work of Sanarelli 

 have led many to believe that a characteristic feature, 

 the bacillus of Sanarelli itself, was found on examination 

 of the blood. Now the truth is, that even with the as- 



