P 12.3-P 13.1 PRESERVATIVES 179 



12.3 Gerlach 1885 11360,5:511 



formula: sat. aq. sol. {circ. 1.5%) arsenic trioxide 100, gelatin 20, glycerol 60 



12.3 Kaiserling 1897 22575, 147 :389 



FORMULA i: water 100, 40% formaldehyde 20, potassium nitrate 1.5, potassium acetate 3 

 FORMULA II : water 100, potassium acetate 10, glycerol 20 



note: The first solution is intended for the fixation of slabs of pathological material, the 

 color of which is redeveloped in 80% ale, before final preservation in the second solu- 

 tion. Both solutions are, however, excellent general-purpose preservatives. 



12.3 Ordonez 1865 test. 1882 Chevalier Chevalier 1882, 323 



formula: water 30, glycerol 75, tannin, 0.5 



12.3 Pfeiffer test. 1931 Eckert 20540b (abstr. 1932) 7 :G8 



formula: acetic acid 30, methanol 30, 40% formaldehyde 30 

 RECOMMENDED FOR: preservation of green algae. 



13 OTHER PRESERVATIVES INCLUDING MIXTURES OF 11 AND 12 



13.1 Beale 1880 Beale 1880, 66 



formula: methanol 6, acetone 3, creosote 0.5, chalk q.s. to sat., water 95, camphor 1 



13.1 Blaydes 1937 19938, 85:126 



formula i: water 45, 95% ale. 45, 40% formaldehyde 5, acetic acid 5, copper sulfate 0.2 

 formula II : water 25, 95% ale. 60, 40% formaldehyde 10, acetic acid 5, copper sulfate 



0.2 

 recommended for: preservation of color in green plants. 



13.1 Chevalier 1882 Chevalier 1882, 319 



formula: water 60, glycerol 30, calcium chloride 6 



13.1 Cole 1903 Cross and Cole 1903, 181 



formula: water 50, camphor to sat. glycerol 50, acetic acid 0.2, copper acetate 0.2, 

 mercuric chloride 0.01 



13.1 Frey 1877 Frey 1877, 136 



formula: water 90, glycerol 10, sodium chloride 2, mercuric chloride 1 



13.1 Craig 1916 4349, 6:56 



formula: water 80, glycerol 20, 40% formaldehyde 8, potassium acetate 8 



13.1 Frost 1913 4349, 4:41 



formula: sat. sol. thymol 100, cane sugar 44, potassium acetate 2, chloral hydrate 1, 

 sodium fluoride 1 



13.1 Gardiner 1898 test. 1931 Crafts 20540b, 6:127 



formula: water 60, glycerol 30, zinc chloride 2, iodine 0.2, potassium iodide "a trace" 



13.1 Gibson test. 1905 Lee Lee 1905, 268 



formula: water 60, 95% ale. 30, glycerol 30, mercuric chloride 2, acetic acid 0.15 



13.1 Grawitz 1887 7276,27:604 



formula: water 100, sodium chloride 15, sugar 4, boric acid 3, potassium nitrate 2 



13.1 Haythorn 1915 4349, 6 :66 



formula: water 100, sugar 44, potassium acetate 4, arsenic trioxide 0.5 



13.1 Jackson 1919 test. 1922 ips. 4349, 8:75 



formula: water 100, 40% formaldehyde 2, cane sugar 10 



13.1 Jores 1896 23681, 7:134 



formula: water 100, 40% formaldehyde 10, sodium sulfate 2, magnesium sulfate 2, 

 sodium chloride 1 



13.1 Jores 1913 22264, 16:357 



formula: P 13.1 Peck 1900 100, chloral hydrate 1 



