588 EXPERIMENT STATION RECORD. 



It is advised timt affot-ted birds sliould be isolated and Ivept confined until 

 they have recovered. Droppings of all birds known to be infeste<l with the 

 parasites should be destroyed, or if used for fertilizer treated with a disin- 

 fectant. 



In treating affected fowls the authors gave large doses of Epsom salts, the 

 object being to eliminate the egg-bearing proglottides from the intestinal tract 

 as quickly as i)ossible. Turpentine was then administered with the result that 

 all the birds which were treated were saved. 



Experiments conducted to determine the dose of salts necessary are reported 

 in tabular form. For birds 1 to 5 weeks old, 10 grains are recommended ; 

 from 5 to 10 weeks, 15 grains; and from 10 to 15 weeks, 20 grains; from 15 

 weeks to 6 months, 30 grains ; from 6 months to 1 year, 35 grains ; and for adult 

 fowls 40 to 50 grains. Up to 15 weeks, the salts should be given in the feed, 

 after this with 2 teasi)oonfuls of water. In administering turpentine, from 2 

 teaspoonfuls to i oz. of which may be given, the liquid can be introduced di- 

 rectly into the crop by means of a soft rubber tube or catheter. By this method 

 the turpentine passes immediately into the intestines and destroys the heads 

 of the worms left behind after the purgative has torn away the long ribbon- 

 like band of segments of the parasite. 



Formaldehyde disinfection without special apparatus, L. E. Walbum (Hos- 

 lyitaUtUl. [Coijciihagcii], Ji (J900), So. 31, pp. 961-97Ji; abs. in, Jour. Amer. 

 Med. Assoc, 53 {1909). ^o. l-'i, p. ll'i'i)- — The author reports a series of com- 

 parative tests of various methods of formaldehyde disinfection. 



The most effective and cheapest is with the special disinfecting formaldehyde 

 apparatus, but good results can be obtained with potassium permanganate- 

 formaldehyde, though larger amounts of the chemicals must be used than the 

 directions call for. It was found to be impossible to obtain satisfactory results 

 until the amounts were increased to 3.3 kg. potassium permanganate, 3.3 liters 

 formalin, and 3.3 liters of water for each 100 cubic meters. 



RURAL ENGINEERING. 



Irrig'ation in Texas, J. C. Nagle {U. ti. Drpt. Agr., Office Expt. Stas. Bui. 

 222, pp. 92, pi. 1). — This is another of the series of reports giving the status of 

 irrigation in the several arid States, with special reference to the data likely to 

 be needed by prospective settlers. It discusses the physical features, climate, 

 and natural resources of the State, and gives a brief description of the larger 

 irrigation projects now in operation there. It also contains a summary of the 

 laws of the State governing irrigation. 



The area at present irrigated in the State is estimated as 400,000 to 500,000 

 acres. No estimate of the area which can ultimately be irrigated is given, be- 

 cause of the fact that a large part of the State has sufficient rainfall to pi-oduce 

 crops so that irrigation in these sections is optional with the farmers. 



Progress report on experiments in supplemental irrig'ation with small 

 water supplies at Cheyenne and Newcastle, Wyoming, 1905-1908, O. W. 

 Bryant (U. S. Dept. Agr., Office Expt. Stas. Circ. 92, pp. 51, figs. 8).— The 

 greater pai't of the land lying between the one hundredth meridian on the east 

 and the Rocky Mountains on the west is beyond the reach of canals from the 

 streams of that section, and the water supply is not sufficient to irrigate any 

 considerable part of it. Consequently the agriculture of this region must be 

 principally such as can be carried on without irrigation. Notwithstanding 

 previous failures to establish permanent homes there, these lands have been 

 taken up very rapidly within the last few years, and the work reported in this 

 circular was undertaken for the purpose of demonstrating to the incoming 



