On Mounting Ohjects in Pliosiohorus. By J. W. Stephenson. 1 69 



informed by Professor Abbe, who kindly determined these points 

 with his Eefractometer from a sample sent by me for his 

 examination. 



Being an aqueous and highly antiseptic fluid, no transfer from 

 it to another medium is required, but I am unable to say what 

 its effect may be on stained preparations, possibly unfavourable, 

 but on this point as well as on its chemical effect on different 

 structures I am unable to express an opinion at present. On the 

 whole, however, I venture to think that for the above and other 

 reasons it is destined to become of great importance in the micro- 

 scopy of the future. 



