654 METHODS AND FORMULAS V 11.2-V 12.1 



11.2 Kitton test. 1883 Hogg Hogg 1883, 247 



formula: a. white lead 30, red lead 30, litharge 30, turpentine q.s. to make a paste; 



B. gold size 

 note: For use mix about 3 parts B with loi A. This mixture sets very rapidly and forms 

 a very hard cement which may be used for the preparation of cells. 



11.2 Mohr and Wehrle 1940 Cellohalm—auct. 20540b, 15:173 



formula: toluene 77, ethyl cellulose 7.7, Canada balsam 15 



11.2 Pelz see V 11.2 Hitchcock 1884 (note) 



11.2 Perruche 1939 Bull. soc. franc, microsc, 8:147 



formula: benzene 100, aluminum stearate 1.5 



USE : For making water-repellent barriers for the temporary restraint of aqueous fluids on 

 slides. 



11.2 Robin 1871 flexible asphalt cement Robin 1871, 379 



formula: carbon disulfide 60, asphalt 30, Venice turpentine 10 



11.2 Rousselet 1898 11479,7:93 



formula: benzene 40, gum damar 25, gold size 30 

 preparation: Dissolve benzene in gum damar. Mix gold size with solution. 



11.2 Seller 1881 see M 33.1 Seller 1881 



11.2 Semmens 1937 Microscope, 1 :5 



preparation: Dissolve 25 gum damar in 250 each of chloroform and xylene. Filter and 



evaporate to 100. 

 RECOMMENDED FOR: ringing lactophenol mounts. 



11.2 Spence 1938 see V 11.2 Gage 1901 (note) 



11.2 Thiersch test. 1871 Robin blue varnish Robin 1871, 381 



formula: 95% ale. 100, shellac 60, spirit blue 1, castor oil 0.4 



11.2 Woohead test. 1884 Cole Cole 1884b, 50 



formula: benzene 50, gum damar 50, zinc oxide 6 

 preparation: Dissolve gum damar in benzene. Grind zinc oxide with solution. 



11.2 Zimmermann test. 1883 Behrens Behrens 1883, 191 



formula: shellac 50, 95% ale. 100, anilin green 2 

 preparation: Dissolve ingredients. Filter. Evaporate to required consistency. 



12 SOLID AT ROOM TEMPERATURES (APPLIED MOLTEN) 



12.1 Aqueous Base 



12.1 de Greet 1904 23833, 28:406 



formula: zinc oxide 25, water 90, gelatin 20 

 preparation: Mix zinc oxide with a little water to make a paste. Add rest of water 



gradually to secure smooth suspension. Heat to 80°C. on water bath. Dissolve gelatin 



in hot suspension. 

 note: This cement is excellent for making alcohol-resistant glass-to-glass seals. 



12.1 Marsh 1878 Marsh 1878, 45 



formula: gelatin 100, water q.s., creosote 0.6 



preparation: Mix gelatin and water and soak for 12 hours. Drain. Melt. Add creosote to 

 molten gelatin. 



12.1 Renter test. 1938 Carleton and Leach Carleton and Leach 1938, 116 



formula: water 100, gelatin 20, potassium dichromate 0.5 



preparation: Dissolve gelatin in 90 water at 80°C. Add potassium dichromate dis- 

 solved in 10 water. 



