564 EXPEKIMENT STATION RECORD. 



areas. " Ditcb banks should be thoroughly cleaned of green vegetation during 

 the winter. The more nearly all winter food plants are destroyed in close 

 proximity to infested cotton fields the more unlikely they will be to become 

 infested the following year." 



Studies on the biology of the Texas fever tick, H. W. Graybill ( V. S. Dept. 

 Agr., Bur. Anim. InfJus. Bill. ISO, pp. 7-.',2, tables 2, figs. 3).— This bulletin is 

 based upon studies conducted at Auburn, Ala., during 1907-8 in cooperation 

 with the veterinary department of the Alabama Station. 



Following a brief account of the history of biological studies of this tick, 

 the author describes his methods of study. Under periods of the nonparasitic 

 portion of development, studies of the preoviposition, oviposition, incubation, 

 hatching, and longevity periods are reported upon. Then follow accounts of the 

 number of eggs laid and precentage hatched, experiments with horizontal tubes, 

 records obtained from the field plats, percentage of females ovipositing, effect of 

 immersion in water on engorged females, the influence of moisture on the incuba- 

 tion period, periods in the parasitic portion of development, observations on 

 the movement of ticks after the first and second molt, early distinguishing of 

 females by males, experiments in transferring ticks on cattle, experiments on 

 rearing unfertilized females, the occurrence of dead ticks on cattle, and the 

 host relations of the cattle tick. 



A bibliography of 22 titles is followed by an appendix consisting of 2 tables, 

 the first on individual records of ticks used in the experiments and the second 

 giving data on parasitic development of the ticks on animals. 



Some of the more important ticks of the United States, W. D. Hunter and 

 F. C. Bisiiopp {U. S. Dept. Agr. Ycarboolc. 1910, pp. 219-230, pis. 2).— This 

 paper gives brief accounts of 10 of the more important ticks that occur in this 

 country. 



FOODS— HUMAN NUTRITION. 



[Experiments with wheat and flour], R. Harcoxjrt {Ann. Rpt. Ontario Agr. 

 Col. and Expt. Farm, 36 {1910), pp. 81-98). — In a study of Nos. 1 and 2 grades 

 of northern wheat of the crop of 1910, in comparison with 1909 wheat, it was 

 found that the water absolution in the new wheat was lower, " but that is only 

 natural when new wheat is compared with old wheat that had been kept in 

 a dry place for 12 months. In all other respects the flour from the new wheat is 

 fully equal to that from the old wheat, and, when we consider the advantage 

 due to aging of the latter, it is plainly evident that the miller has nothing to 

 fear in milling the wheat of the 1910 crop." 



From baking tests with a number of varieties of Ontario spring wheats, the 

 author concludes that " without trying to give too much importance to these 

 baking tests of one year's crop, it may be pointed out that Early Java gave 

 the best all-around results, while French, Gatineau, Red and White Fife, 

 White Russian, and Preston Springs gave results which compared wonderfully 

 well with the Manitoba-grown Standard." 



A large number of baking tests with Ontario-grown winter wheats of 1909-10 

 showed that there were some wide variations in the qualities of the wheats of 

 the two seasons, the most notable point of difference being in the percentage of 

 wet gluten, the amount being in general less in the 1910 crop than in wheats 

 grown the preceding year. However, the author concludes that " although 

 there is such a wide difference in some respects, the two crops are not very 

 far apart in the quality of the bread they will produce." 



The results obtained with carbon bisulphid, hydrocyanic-acid gas, and sulphur 

 as mill fumigants are noted below from another source. 



