MODIFICATIONS OF THK FOREGOING SOLUTIONS. 197 



FLUID No. 3 



Bichloride of mercury . ... . 1 part. 



Common salt ....... 4 



Water 200 



For blood-corpuscles of warm-blooded animals. 



FLUID No. 4 



Bichloride of mercury 1 part. 



Acetic acid ....... 2 ,, 



Water 300 



" Serves best for the nuclei of animal tissues, but it swells up the fibres and 

 distorts the forms of the cells." 



FLUID No. 5 (FEEY, Le Microscope, 1867, p. 233). In the place here 

 quoted, Frey speaks of the liquids of Pacini as differing from those of Goadby 

 through their containing glycerin in lieu of alum. He gives the following 

 directions. Take 



Sublimate 1 part. 



Sodium chloride 2 



Glycerin (25 Beaume) 13 



Water 113 



Allow the mixture to remain undisturbed for at least two months. At 

 the end of that time, take for use 1 part, mix with 3 parts of water, and 

 filter. This mixture is said to be a good preservative of all delicate tissues. 



FLUID No. 6 (Ibid} 



Sublimate 1 part. 



Acetic acid 2 



Glycerin (25 Beaum^) 43 



Water 115 



This mixture is to be employed in the same way as the last. It is said to 

 destroy red blood-corpuscles, but to preserve white blood-corpuscles. 



365. Modifications of the foregoing Sublimate Solutions. The 

 following formulae are quoted by Frey from Cornil as being in use at the 

 Pathological Institute of Berlin. 



1. Sublimate 1 part. 



Sodium chloride 2 



Water 100 



For the more vascular tissues of warm-blooded animals. 



2. Sublimate 1 part. 



Sodium chloride 2 



Water 200 



For similar tissues of cold-blooded animals. 



3. Sublimate 1 part. 



Sodium chloride ...... 1 



Water 300 



For pus-corpuscles and analogous elements. 



