1894.] MICROSCOPICAL JOURNAL. 31 



coarse to produce proper capillary tubes as proven by actual 

 tests. These wicks can be made in any desired sliape or size, 

 either by hand or the use of machinery adapted for the pur- 

 pose. They have been used by Dr. Ephraim Cutter and Dr. 

 John A. Cutter in microscopical work, clinical and laboratory, 

 for months ; and with objectives including the one-sveenty-fifth 

 inch of Tolles. They state that the light is the best afforded 

 them for such work. Since there is no combustion of cotton as 

 in a cotton wick the wick does not clog hence needs no trim- 

 ming. 



MICROSCOPICAL MANIPULATION. 



Moisture on the Cover Glass. — The cause of a deposit of 

 moisture on the under side of the cover-glass must be sealing 

 up before the object or the base on which it lies is thoroughly 

 dry, or perhaps through the ring not being cemented properly 

 on the glass slip, and so allowing the medium in which the fin- 

 ishing cement is dissolved to get through into the cavity in the 

 cell in which the object lies, and condensing on the cover. The 

 cure : With a sharp knife scrape off the ring of cement which 

 lies on the surface of the cover-glass, also slightly down the 

 side, about the thickness of the same; then warm the cover- 

 glass slightly over a small spirit lamp, moving it about to pre- 

 vent cracking it, and it should be then easily removable with 

 the knife without injury either to the glass or object ; then, before 

 replacing, take care that the object is thoroughly dry. If the 

 ring springs off instead of the cover-glass only, dry thoroughly ; 

 then put just sufficient cement on the un lerside of it to attach 

 it to the glass, and let this dry thoroughly before finishing off. 



BACTERIOLOGY. 



The Typhus Bacillus. — Dr Fraenckel of Berlin, announces 

 that he has discovered a typhus bacillus ; and that by using it 

 in vaccination, he has produced a rapid, benign course of the 

 fever. Dr. Rumpf has cultivated an anti-fever bacillus which, 

 he says, will cure typhus in eight days. 



To Detect Influenza Bacilli in Blood. — Spread the blood 

 upon cover gla-ss slips. Dry thoroughly. Putin absolute alco- 

 hol 5 to 10 min. Stain as follows : 



