202 METHODS AND FORMULAS F 1670.0000-F 1700.0000 



1670.0000 Champy 1911 test. 1942 Langeron Langeron 1942, 384 



formula: water 250, osmic acid 1.1, chromic acid 1.0, potassium dichromate 2.9 



1670.0000 Nakamura 1928 13367,55:1 



formula: water 250, osmic acid 1, chromic acid 2, potassium dichromate 5 



1670.0000 Nassanow 1923 1780, 97:136 



formula: water 250, osmic acid 1.7, chromic acid 0.85, potassium dichromate 5 



1670.0000 Severinghaus 1923 763, 53 :3 



formula: water 250, osmic acid 1.2, chromic acid 0.6, potassium dichromate 3.75 



1670.0000 Zweibaum 1933 4285a, 10:210 



formula: water 250, osmic acid 0.3, chromic acid 1, potassium dichromate 2.7 



1 670.001 Osmic-chromic-dichr ornate-acetic 



1670.0010 LaCour 1929 LaCour's 2B—auct. 14900,124:127 



formula: water 250, osmic acid 0.5, chromic acid 1.5, potassium dichromate 1.5, acetic 

 acid 0.8, urea 1.5, sodium sulfate 0.8 



1670.0010 LaCour 131 LaCour' s 3BD—aucL 11360,51:119 



formula: water 250, osmic acid 0.6, chromic acid 1.0, potassium dichromate 1.0, acetic 

 acid 1.5, saponin 0.1 



1670.0010 LaCour 1931c LaCour' s 2BE—auct. 11360,51:124 



formula: water 240, osmic acid 0.5, chromic acid 1.4, potassium dichromate 1.5, acetic 

 acid 0.75, saponin 0.05 



1670.0010 Smith 1935a Smith's SI— auct. 11211,49:119 



formula: water 250, osmic acid 0.8, chromic acid 1.25, potassium dichromate 0.6, acetic 

 acid 1.5, saponin 0.06 



1670.0010 Smith 1935b Smith's S2— auct. 11211,49:119 



formula: water 250, osmic acid 0.8, chromic acid 1.2, potassium dichromate 1.6, acetic 

 acid 1.0, saponin 0.1 



1670.0019 Osmic-chromic-dichr omate-acetic-{other organic acids) 



1670.0019 Benda 1903 764, 12 :752 



formula: a. water 250, osmic acid 1, potassium dichromate 1.8, acetic acid 6.35; 



B. water 125, chromic acid 1.25, pyroligneous acid 1.25; C. water 250, potassium 



dichromate 5 

 method: a, 8 days -^ water, 1 hr. -^ B, 24 hrs. — > C, 24 hrs. — > running water, 24 hrs. 



1670.0090 Osmic-chro7nic-dichromate-{other organic acid) 



1670.0090 Champy 1913 1915, 54:307 



formula: a. water 250, osmic acid 1.25, chromic acid 1.15, potassium dichromate 3; 

 B. water 175, chromic acid 2.5, pyroligneous acid 35; C. water 250, potassium dichro- 

 mate 7.5 

 method: a, 24 hrs. -^ distilled water ,J>^ hr. — > B, 20 hrs. -^ distilled water, }i hr. — > C, 

 3 days -^ running water, 24 hrs. 



1700.0000 OSMIC-DICHROMATE 



These are the best known of all the cytoplasmic fixatives, particularly for the demonstra- 

 tion of mitochondria. They should not, however, be employed as general-purpose fixatives, 

 for which use they were not intended. 



1700.0000 Altmann 1890 test. 1928 Gatenby Gatenby and Cowdry 



formula: water 250, osmic acid 2.5, potassium dichromate 6.25 



note: Langeron 1942, 384 assigns an identical formula, without reference, to Altmann 

 1894. 



