SOUTH CAROLINA. 181 



number of crosses and selections obtained in this work were tested 

 under field conditions. 



In pursuing the work on the relation of soil to length and quality 

 of staple in cotton, samples of several varieties of seed were sent out 

 and grown in ditferent sections of the State where pronounced soil 

 types were represented. Samples of the cotton produced were graded 

 and judged at the station, and samples of the different soils on which 

 the cotton was grown were sent in for examination. The project 

 with reference to anthracnose in cotton was carried forward. It was 

 determined that this fungus lives during the winter in a conidial 

 staffe, beinjr found alive in that form as late as May 2G. It was fur- 

 ther found that seed from infested fields, upon germination, is capa- 

 ble of conveying the disease to the seedlings. It was demonstrated 

 that the mycelium of the fungus occurs within the seed coats of the 

 cotton seed from which the young plants are attacked. 



The study of the effect of foreign pollen on the productivity of Ro- 

 tundifolia grapes was hindered to some extent by the change of the 

 horticultural grounds, but some experiments were continued on the 

 old plantings. 



The entomologist devoted all his time to the study of the life 

 history and action of the stomach worm, which is carried on in 

 cooperation with the station veterinarian and the state entomologist. 

 On account of the close relationship of the stomach worm to other 

 parasites of the intestinal tract of ruminants, this project has been 

 extended to include an investigation of the strongjdoid parasites. 

 Several post-mortem examinations revealed the presence in the intes- 

 tines of the hookworm of cattle {Monodontns phlehotomus) ^ stomach 

 worm {Hcemonchus contortus), a strongyloid worm, named hair 

 worm {Cooperia punctata), and the inflated bowel worm {(Esopha- 

 gostoma in-flatiim). In connection with this study daily examina- 

 tions were made of the feces of calves and the Qgg record of the 

 parasites noted. With reference to combating the stomach-worm 

 disease, it was concluded that medicinal treatment is not successful 

 and that changing or rotating pasture lands is the most effective 

 method to eradicate the pest. The entomologist also began work on 

 the temperature relations of insects for the purpose of determining 

 the total temperature required for the passage from one stage to 

 another in the life cycle of a number of species, the studies being 

 principally with Ilippodamia convergens, Conotrachelus nenuphar^ 

 Sauninoidea exitiosa, and Aphis Tjrassica. 



During the past year every department of the station carried on 

 work under the Hatch fund. The subjects studied were as follows: 

 Economical use of fertilizers for various crops, systems of rotation, 

 plant breeding, sources of nitrogen in fertilizers, the chemical com- 

 position of different substances, starch production, sweet-potato rots, 



