ANNUAL REPORT, 1938 101 



serious losses in the form of mortality, retardation in growth, and less 

 profitable marketing of carcasses for food consumption. 



290 Some public health aspects of food. James E. Fuller. Jour. Amer. Dietet. 

 Assoc. 14 (6):412-416. 1938. 



The discussion is concerned with food-borne bacterial infections and 

 intoxications in humans — ptomaine poisoning, food poisoning, bot- 

 ulism, and undulant fever. The organisms concerned, the frequency and 

 seriousness of the infections, and some precautions which should be taken 

 are all considered. 



291 Species of Cladosporium on tomato and the allergic response in man as an 

 aid to their identification. Emil F. Guba and Francis M. Rackemann. 

 Mycologia 30 (6):625-634. 1938. 



The results point to the fact that individuals allergic to fungi react 

 differently to extracts of species in the same genus, and that this biologic 

 test appears to offer another method by which closely related fungi may 

 be distinguished one from another with considerable certainty. 



293 The pollination of the cultivated blueberry. John S. Bailev. Amer. Soc. 

 Hort. Sci. Proc. 1937:71-72. 1938. 



Under Massachusetts conditions none of the varieties will set as well 

 when self-pollinated as when exposed to pollination by insects. A few 

 varieties will set a partial crop in some years, but self-pollination cannot 

 be relied upon to give a consistently good commercial crop. 



294 Storage changes in pascal celer\-. Robert E. Ycung. Amer. Sec. Hort. Sci. 

 Proc. 1937:697-698. 1938. 



The value of pascal celery on the Boston Market depends primarily 

 upon the amount of heart growth that has taken place while the plants 

 have been in the storage pit. There is a definite movement from the 

 outer leaf stalks to the heart, and the outside leaves of the pascal celery 

 plant are of definite value in the growth of heart stalks during storage. 

 It would appear to be an advantage, therefore, in preparing the crop 

 for storage, to leave as many leaf stalks on the plant as possible, removing 

 only those which are damaged by frost and handling. 



295 Yield-growth relationships in asparagus. Robert E. Young. Amer. Soc. 

 Hort. Sci. Proc. 1937:576-577. 1938. 



The most careful selection of crown at the time of planting will not 

 eliminate the poor producing asparagus plants. It has been found that 

 there is a high correlation between the number of spears produced and 

 the number of stalks produced after the harvesting season. This is true 

 for both male and female plants. Asparagus plant selection on the basis 

 of summer growth is not in itself sufficient for the plant breeder, but it 

 will give the producer of asparagus seed a method of plant improvement. 



296 A statistical analysis of form variations in specific strains of tomatoes. 

 W. H. Lachman, Eleanor A. West and Grant B. S\ nder. Amer. Soc. 

 Hort. Sci. Proc. 1937:559-561. 1938. 



Shape index (computed by dividing the average equatorial diameter of 

 each tomato by its polar diameter) was used in a statistical study of 

 variations in shape in 10 strains of tomatoes. There were no consistent 

 changes in the shape during the season, although it was apparent that 

 some varieties may be affected by more than genetic influences. The 

 data showed that the 30 fruits used as a sample were sufficient to con- 

 stitute a representative sample. 



297 Further observations on a chlorosis of the cultivated blueberry. John S. 

 Bailey and John N. Everson. Amer. Soc. Hort. Sci. Proc. 1937:495-496. 

 1938. 



Experiments continued from the previous year gave some indication 

 that the chlorosis might be due to a lack of iron. Further experiments 

 with blueberries grown in pots under different conditions all lead to the 

 same conclusion — that the chlorosis is caused by a lack of iron in the 

 blueberry plant. 



298 Mailing stock influence on fruit size and shape. Lawrence Southwick. 

 Amer. Soc. Hort. Sci. Proc. 1937:359-361. 1938. 



Studies reported show that certain known rootstocks under Mcintosh 



