and Laboratory Methods. 1593 



their color after remaining in solution No. 1 for a few days, but the color 

 returns after the specimens are transferred to the next solution, which consists 

 of, 



No. 2. Alcohol, ...-., 4 parts. 



Water, 1 part. 



and in which they remain for 3 to 5 hours, after which they are placed in, 



No. 3. Alcohol, 95 per cent, 

 for 1 to 2 hours, and finally are permanently preserved in, 



No. 4. Potassium acetate, .... 1 part. 



Glycerin, ....... 2 parts. 



Water distilled, ..... 10 parts. 



which, before use, should be allowed to stand for 48 hours, and then filtered. 

 Specimens thus prepared and preserved should be kept in a dark place, as 

 light produces bleaching in the course of time. — Texas Med. Ne^cs, 10: 10. 



c. w. J. 



Examination of Blood. — Six things are essential in order to make satisfac- 

 tory examination of the blood : (1) The apparatus must be absolutely clean. 

 (2) The various stages in the process must be performed rapidly, because the 

 cell coagulation of the blood will interfere with any of the tests. (3) The work 

 must be done accurately. (4) Making large quantities of stain and keeping 

 same in a glass-stoppered bottle will standardize the solution, giving mini- 

 mum variations in intensity of stain. (5) Fixing of specimens, by continuous 

 heat, with as slight a degree of variation in distribution of heat as possible. 

 (6) Taking of blood specimens with reference to time of day. 



In order to more accurately fix the blood count, it has been found that speci- 

 mens taken in the morning, before any undue excitement is indulged in, and 

 previous to taking of liquids or solids, will give a more uniform blood count than 

 those taken at any other period of the day. — /our. Am. Med. Ass. 37 : 8. 



c. w. J. 



The corner-stone of the new medical building of the University of Michigan 

 was laid on October 15th by Dr. Leartus Connor, president of the State Medical 

 Society. The building will contain the laboratories and class-rooms of the 

 departments of hygiene, bacteriology, anatomy, histology, and pathology. The 

 contracts for its erection call for an expenditure of $88,000, exclusive of what 

 may be required for heating, plumbing, and general equipment. — Science, 14 : 356. 



