Abstracts 85 



RESEARCHES ON DISEASE RESISTANCE IN RED CLOVER; 

 PRELIMINARY REPORT. 



BY SAMUEL M. BAIN, UNIVERSITY OF TENNESSEE. 



(A hstract.) 



There is a great contrast in the behavior of resistant and non-re- 

 sistant strains of red clover toward the anthracnose, caused by Col- 

 letotrichum Trifolii. Selections made at the Tennessee Station in 

 1905 have transmitted their resistant character to their offspring 

 under field conditions continuously since. 



Preliminary results have been obtained this year which indicate 

 that this resistance is due at least in part to the chemical character- 

 istics of the cell contents. Spores of the fungus causing the disease 

 were placed in hanging drop cultures in contact with fresh sections 

 of the stems of races of known resistant or non-resistant character. 

 While often no distinct differences would appear in the rate of 

 growth of the mycelium, and occasionally even contradictory re- 

 sults would appear, in the majority of instances the spores growing 

 in sterile water in contact with stem sections of resistant plants 

 showed retarded growth as compared with those growing in contact 

 with non-resistant stems. In some instances the difference in rate 

 of growth amounted to as much as 300 per cent in the average of a 

 series of cultures. 



November 27, 1914. 



OBSERVATIONS OF MARS AND JUPITER DURING THE 1914 

 OPPOSITION OF THESE PLANETS. 



BY LATIMER J. WILSON. 



(Abstract.) 

 Discusses the phenomena preceeding and following the summer 

 solstice in the northern hemisphere of Mars. Evidence of cloud, 

 snow, and frost in sub-arctic regions. The re-formation of the 



