694 ABSTRACTS 



media colonies of B. coli are black, while the colonies of B. typhi 

 are colorless. Moreover the colon colonies do not affect the media 

 lying between the colonies. Other advantages are mentioned. 



—P. B. H. 



The Requirements of the Gonococcus for Its Natural and Artificial 

 Growth. L. D. Bristol. Medical Record, 1916, 90, 63-65. 

 From a theoretical standpomt it would appear that the gonococcus 

 requires for its growth human glycoproteins, especially human mucins 

 and related compounds. This conclusion is drawn from a study of the 

 character of the proteins upon which the gonococcus grows in the 

 hmnan body. 



Additional evidence that conjugated proteins are essential to the 

 growth of the gonococcus is found in the fact that while the gonococcus 

 will not multiply in the ordinary culture media, containing simple 

 animal proteins, its best growth is obtained upon media containing 

 human fluids, such as ascitic, cystic, or hydrocele fluids, blood serum 

 or urine, in all of which mucoid substances of the conjugated protein 

 group are found. — M. Vv". C, 



Limitations to the Cultivation of Mammalian Tissues in Vitro. R. A. 



Lambert. Proc. N. Y. Pathol. Soc, 1916, 16, 63. 



Connective tissue is the only mammalian tissue which can be cul- 

 tivated in vitro for any considerable period. Transplantable tumors 

 show active growth only for a short time. Human malignant tumors 

 have not been cultivated successfully although human connective 

 tissue cells and wandering cells show marked activity in cultures. 



The limited growth of tumor cells may be referable to several fac- 

 tors, mechanical injury, accumulation of metabolic products, presence 

 of inhibiting antibodies and nutritional disturbances. Probably sev- 

 eral factors are jointly responsible. — W. J. M. 



MEDICAL BACTERIOLOGY 



Case of Mastoiditis Complicated by Purulent Cerebrospinal Meningitis; 



Operation and Recovery. W. H. Huntington. Jour. A. M. A., 



1916, 67, 201-202. 



Report of a case. 



Friedlander's bacillus was the only organism found in the spinal 

 fluid.— G. H. S. 



Syphilis and Tuberculosis in the Same Lung. R. A. Keilty. New 



York Med. Jour., 1916, 104, 252-253. 



Report of a case in which the tubercle bacillus and Treponema 

 pallidum were demonstrable in the lung tissue. — M. W. C. 



