696 EXPEEIMENT STATION RECORD. 



sizei- under the skin. The treatment for this affection was ineffectual, and the animal 

 was killed. The post-moilem examination showed numerous white or purple nodules 

 of the size of a pea on the diaphragm and similar nodules in the lungs. A micro- 

 scopic examination of these nodules revealed the presence of a form of coccus. 



The teeth, of the horse as affected by age — I, C. McCullouch ( Virginia Sta. 

 Bui. 115, pp. 97-108, figs. 6). — Brief notes are given on the structure and development 

 of teeth, and on the character of the incisors, canine teeth, and molars. 



The teeth of the horse as affected by age — II, C. McCullouch ( Virginia Sta. 

 Bui. 116, pp. 109-136, figs. 17) . — Notes on the appearance of the teeth in horses from 

 time of birth until the age of 5 years. 



Animal parasites, J. Withvcombe ( Oregon Sta. Rpt. 1901, j>p. 23, 24). — An investi- 

 gation is made of the extent to which the liver fluke is prevalent in Oregon. From 

 a large flock, nearly all of which was reported as having died from the attacks of 

 this parasite, 7 sheep were secured for examination. Only a few fluke worms were 

 found and it is believed that the loss of sheep was not due to the presence of these 

 parasites. Stomach worms were found in one upon post-mortem examination, and 

 4 of the animals were given 4 drams of gasoline with 10 drops of carbolic acid in 4 oz. 

 of milk daily for 3 days. As a result they gained rapidly in weight. 



The treatment of sarcoptic mange with cresol liniment, Albrecht ( Wchnschr. 

 Thierheilk. u. Vlehzudit, 4-5 (1901), Xo. 17, pp. 194-198). — Good success was reported 

 from the use of this liniment in the treatment of mange of dogs and pigs. 



AGRICULTURAL ENGINEERING. 



Irrigation in India and America, E. H. Pargiter {Irrig. Age, 15 (1901), Nos. 

 11, pp. 355-362; 12, pp. 393-400; 16 { 1901 ) , Xos. 1, pp. 6-12; 2, pp. 43-48; 3, pp. 79-82).— 

 The system of irrigation control in India is very clearly explained and compared 

 with that in force in the United States. The management of land and water and 

 the control of colonization are entirely in the hands of the government. The canals 

 are fjractically all public. The application of irrigation water is regulated by the 

 level of the ground water. The conditions of water supply are peculiarly fortunate 

 in India. Even in dry seasons on the plains the rainfall in the mountains is suf- 

 ficient to maintain a flow in the streams. This, with the melting of snows at the 

 higher altitudes, gives a continuous and reliable supply. Rotation in the use of 

 water is practiced in times of scarcity. In conclusion, it is claimed that while 

 agricultural development in India under absolute government control has been 

 slow it has been safe, w^hile under private ownership in the United States it has been 

 rapid, but accompanied by conflicts of interest, expensive litigation, and uncer- 

 tainty of rights. 



Irrigation in the West, W. E. Smvthe [Amer. Mo. Rev. of Reviews, 25 {1902), 

 No. 1, jjp. 75-80). — This article discusses a plan of action for the National Govern- 

 ment with regard to irrigation. 



Current meter and weir discharge comparisons, E. C. Murphy {Proc. Amer. 

 Sac. Civ. Eng., 27 {1901), No. 7, pp. 798-806, pi. 1, figs, i^).— This paper gives the 

 results of a series of experiments made at the hydraulic laboratory of Cornell Uni- 

 versity to test the accuracy of velocity measurements obtained with the current meter 

 used by different methods. The results bring out quite clearly the fact " that the 

 accuracy of the current-meter discharge measurements plays only a comparatively 

 email part in the accuracy of the measurements of stream flow. . . . 



"In river gaging it is the accurate measurement of the volume flowing per day and 

 per month that is desired. Single discharge measurement is only one of the factors 

 on which this depends. Daily flow is found from a discharge curve giving the rela- 

 tion between discharge and river stage, and on the daily fluctuations in the stage. 



