EUEAL ENGINEEEING. 889 



has meant a saving to tlie raucters of at least $240,000. This does not include 

 the profits resulting from the breeding and profitable feeding of the hogs saved." 



Tables are also given w^hich show the comparative success of the treatment 

 on the uninfected and infected ranches and the results of the different methods 

 of treatment recommended by the station. The unsatisfactory results obtained 

 with the serum by some owners are also detailed, and critically discussed. The 

 reasons ascribed are incorrect diagnosis, the use of serum alone in cases where 

 serum and virus should have been employed, and vice versa, and finally the use 

 of spoiled serum and virus. 



Hog' cholera and its prevention, R. P. Marstelleb (Texas Sta. Bui. 157, 

 pp. 7-19, flgs. 10). — This is a popular account in which are considered the 

 symptoms, susceptibility, mortality, dissemination, use of serum for prevention, 

 and prevention of spread of the disease. 



A new cylicostome worm from the horse in London, R. T. Leipeb {Vet. 

 Jour., 69 (1913), No. JfGO, pp. 460-462, fig. i).— The name Cylicostoma mettami 

 Is given to a new nematode parasite of the horse. 



Some experiments on medical treatment of coccidiosis in chickens, K. F. 

 Meyer and W. J. Crocker (Amcr. Vet. Rev., 43 (1913), No. 5, pp. 497-507).— A 

 report is given of investigations conducted during an outbreak of this disease 

 on a poultry farm, in which chicks from 6 to 8 weeks of age died at the rate of 

 150 per day and several old hens succumbed. It is stated that approximately 

 1,800 chicks were lost in from 2 to 6 weeks. 



Therapeutic treatments with various medicinal agents are reported ui)on. 

 The experiments indicate that calomel and methylene blue are capable of pro- 

 longing life but whether or not they are distinctly parasitotropic has yet to be 

 determined. 



" The entire endemic of avian coccidiosis was eradicated by simple isolation, 

 cleaning, and disinfection, the most dependable treatment available until the 

 future presents more efficient parasitotropic measures." 



-RUHAL EITGINEEEING. 



Message of the governor of Porto Rico [regarding' irrigation], G. R. Colton 

 (Smi Juan, 1913, pp. 25+23, pis. 2). — This message, in both English and Spanish, 

 suggesting and recommending the raising of funds for the completion and sat- 

 isfactory operation of the irrigation works in Porto Rico, relates the history of 

 irrigation on this island and describes the irrigation district and unfinished and 

 proposed works. The district contains 43,000 acres of irrigable land and has 

 3 storage projects with a combined capacity of 33,264 acre-feet. 



Many novel irrigation and other engineering features are included in the 

 works, among which is a combined cut and tunnel conveying irrigation water 

 through the mountains, 4,046 ft. in length and so located as to give an abrupt 

 fall of 1,500 ft. to the water, thus developing over 2,000 electrical horsepower. 

 The total cost of construction is estimated at $4,000,000. 



Irrigation and flood protection, Papago Indian Reservation, Arizona, 

 C. R. Olberg and F. R. Schanck (U. 8. Senate, 62. Cong., 8. Sess., Doc. 973, 

 1913, pp. 32, pis. 19). — This report, which includes maps, plans, and estimates of 

 cost, proposes a system of water development and a distributing system for the 

 Irrigation of about 3,000 acres of Indian land and a permanent system of protec- 

 tive works to stop erosion and damage to irrigable lands by floods at an esti- 

 mated cost of $150,000. It is further estimated that the annual cost of mainte- 

 nance for the system will amount to $15,605, or approximately $5 per acre 

 when working at its maximum capacity. 



