23,6 Schbbl: Chaulmoogra and Allied Preparations 539 



oils decreasing in the order- mentioned. Oil derived from Gyno- 

 cardia odorata, a plant systematically closely related to Tarak- 

 togenos kurzii, proved to be inactive in our experiments. It 

 lacks the optically active fatty acids. 



4. The growth-inhibiting strength of the sodium salts of 

 chaulmoogra oil acids appears to vary, in as much as the soap 

 made from the total fatty acids inhibits the growth of Bacillus 

 tuberculosis to a higher degree than does that made of a fraction 

 of the! acids. 



5. A sodium salt prepared from isolated hydnocarpic acid 

 approaches closely in strength the soap of total fatty acids, 

 while the sodium salt of chaulmoogric acid is far below the soap 

 of hydnocarpic acids as far as the growth-inhibiting effect is 

 concerned. 



The following abbreviations are used in Tables 1, 2, and 3 : 



~ no growth in two and four weeks. 



T inh no growth in two weeks; growth in four weeks less than controls. 



+ inh ^ rowtn in two and four weeks scantier than controls. 



+, growth as good as controls. 



T growth in two and four weeks as good as controls. 



0, not tested. 



— , no growth. 



+ inh, inhibition growth scantier than controls. 



m inh & rowth P oorer than in s0 um gynocardate I 



