188 KEPORT OF OFFICE OF EXPERIMENT STATIONS. 



Some work was clone on the entomological projects, especially on 

 the parasitic and preclaceous enemies of the codling moth. Work 

 was also continued on the study of anemia in horses, the pathologi- 

 cal anatomy being worked out. Inoculation experiments carried 

 on in this connection gave varying results, and hence the infectious 

 character was not established beyond question. 



Under the Hatch fund, progress was made in various lines of work. 

 The station herbarium now numbers 11,190 si^ecimens, and is used 

 largely in advising ranchmen about the native plants. Experiments 

 in smuding to prevent frost injury indicate that fruit can be suc- 

 cessfully grown even in the low-lying valleys where conditions are 

 very adverse to the production of a crop. A number of ornamental 

 shrubs grown in the arboretum have been found well suited to the 

 climatic conditions of the State. 



The chemist did considerable miscellaneous analytical work on 

 soils, water, feeds, etc. A report was made on digestion experi- 

 ments conducted on the range, and it was found quite feasible to 

 determine approximately the feeding value of the various plants 

 under range conditions. Soils from Las Vegas containing 15 per 

 cent of gypsum were examined, and jDot experiments were made 

 which indicated the unproductiveness of the soil to be due to the 

 gypsum it contained. In agriculture and animal husbandry sheep 

 breeding for early lambs was carried on, oats and peas were grown 

 for pig fattening, and some work was done in the methods of irri- 

 gating and cultivating alfalfa, including the selection of varieties 

 for drought resistance and for pasturing. Variety tests were made 

 of sugar beets, Kafir corn, winter wheat, and similar crops; and 

 evaporation studies were made in tanks in which the soil was culti- 

 vated to depths of 2, 4, and 6 inches. The effect of time of applica- 

 tion of irrigation water on oats and wheat and the number of applica- 

 tions before and after heading were studied in relation to softness of 

 the grain. Breeding work with potatoes was followed, and the study 

 of the effect of proper cultivation and of irrigation was included. 

 Tests were made of various plants grown for forage and for pastur- 

 age, and a dairy herd of 8 cows was secured for the purpose of study- 

 ing the cost of butter-fat production with different feeds. 



The entomologist studied the alfalfa cutworm and tested the use 

 of irrigation water run down the furrows at night when the worms 

 are out as a means of their control. Means of stamping out the 

 Mediterranean flour moth were tested in a local flour mill, an uniden- 

 tified parasite of the insect was studied, and the investigation on the 

 European elm scale was followed up. 



The following publications were received from this station during 

 the year: Bulletins 68, Equine Anemia; 69, A Report on Irrigation 

 Laws and Litigation in Nevada; TO Food and Drug Inspection; 71, 



