508 II. M. CAKLETON 



The practical outcome of this note, then, is that while 

 it is immaterial whether a concentrated (6 per 

 cent.) solution of mercuric chloride be dis- 

 solved in isotonic saline or in distilled water, 

 formol of 5 per cent, should be made up in 

 isotonic saline and not in distilled water. 



In conclusion, I have to thank Professor Sir Charles Sherring- 

 ton for his interest in my work and for according me every 

 facility in his laboratory. 



March, 1922. 



Bibliography. 



1. Gatenby, J. B. — Article on cytological methods in Lee's ' Micro- 



tomist's Vade-Mecum ', 8th ed. 

 2. "Cytoplasmic Inclusions of the Germ-cells", part ii, 'Quart. 



Journ. Micr. Sci.', vol. 62, 1919. 



3. Langeron, M. — ' Precis de Microscopic ', 3rd ed., 1921. 



4. Lee, B. — ' Microtomist's Vade-Mecum ', 8th ed., 1921. 



5. Mallory and Wright. — ' Pathological Technique ', 7th ed., 1918. 



6. Mann, G. — ' Methods and Theory of Physiological Histology ', 1902. 



