NEVADA. 151 



A paper was prepared during the year on the food of the parasites 

 of the codling- moth after oviposition, the relation of their food to 

 their longevity, and their reproduction. The life histories of some 

 of these parasites were worked out and written up and new forms 

 were described. In connection with studies of the feeding habits of 

 the parasites numerous photographs were taken with apparatus 

 specially devised by the station for such purposes. 



Other work under the Adams fund included studies of equine 

 anemia with reference to its effect on the bone marrow, the blood, 

 and the liver; chemical studies of certain constituents of the alfalfa 

 plant; alfalfa breeding work; and a study of native species of Tri- 

 folium. A paper on the intracellular bodies associated with equine 

 anemia has been published.^ 



Under the Hatch fund the department of botany, horticulture, and 

 forestry confined its work to established lines, including studies of 

 native plants of economic importance, orchard heating experiments 

 for the prevention of injury from late spring frosts, and trials of 

 different species of forest trees. The botanical collection of the station 

 now includes manj?^ seed samples of native clovers, lupines, and other 

 native species of value economically. The orchard heating experi- 

 ments resulted in successfully encountering a temperature of 22° F. 

 on May 8, and in demonstrating the necessity of using in oil heaters 

 a fuel of a certain grade and quality. Up to the present time the 

 station work in forestry has been preliminary. Observations with 

 regard to the economic possibilities of certain species of forest trees 

 were made during the year and forest nursery work was carried on 

 with species of fir, spnice^ and pine. The results with Pinus sco'pu- 

 lorum were especially promising. 



The department of entomology continued its studies of certain cut- 

 woiTns infesting alfalfa and completed the life-history work of one 

 of the species. The work of the department further included studies 

 of the food of certain mosquitoes and experiments on combating the 

 European elm scale. Fumigation experiments were made with 

 hydrocyanic-acid gas to determine its efficiency in the control of the 

 Mediterranean flour moth. A native parasite of the flour moth was 

 found and studied. Attention was also given to the potato eelworm, 

 with reference to local conditions, and to alfalfa weevils. 



The work in agronomy was conducted along the same lines as 

 heretofore and included sugar-beet experiments and evaporation and 

 irrigation experiments in cooperation with this department, together 

 with work on alfalfa and in potato breeding. The alfalfa experi- 

 ments in progress included methods of irrigation, culture, and 

 variety tests. 



iProc. Amer. Vet. Med. Assoc, 48 (1911). 



