CALIFORNIA. 85 



Opportunities, for extension of work have l^een provided Ijy special 

 State appropriations for the purchase and equipment of a farm ; for 

 a laboratory for the study of plant diseases in southern California; 

 for investigations of pear blight, walnut blight, and viticulture; for 

 improvement of cereals, and for studies of poultry problems and dis- 

 eases. A farm .of 780 acres has been secured near Davisville in the 

 Sacramento Valley about 85 miles from Berkeley, and is being put 

 in condition for instruction and investigation Avork. Uiuler the State 

 appropriation for a study of plant diseases, plans are being made for 

 a pathological laboratory at Whittier and for a cultural station at 

 Riverside which will be chiefly devoted to work with citrus fruits. 

 The farm at Davisville will incidentally be utilized to extend the 

 scope of the cereal investigations which are now^ being conducted at 

 Yuba City and Modesto. Some work is also being carried on at the 

 substation at Tulare, and the forestry substation at Santa Monica is 

 being restored under the State appropriation for that purpose. 



The most notable development of the work lias been in plant dis- 

 eases, entomology, and agricultural technology. Although handi- 

 capped by inadequate equipment, the entomologist has made marked 

 progress in investigations on mosquitoes, the codling moth, corn 

 worm, cherry worm, woolly aphis, oak caterpillars, tussock moth, a 

 new pear thrips, food of orchard birds, and spraying problems, be- 

 sides expanding the courses of instruction in the university and estab- 

 lishing a correspondence course. The work in agricultural technol- 

 ogy has been mainly devoted to studies concerning the effect of envi- 

 ronment on the composition of sugar beets, the canning of cured 

 prunes, and the improvement of cereals in yield, composition, earli- 

 ness, resistance to drought and disease, and milling, baking, and 

 bleaching quality by means of cross breeding, selection, and improved 

 methods of culture. Improved special laboratory facilities for this 

 work have been added, and the cultural work will soon be amply pro- 

 vided for. 



A small zymological laboratory for special studies relating to 

 vinification has also been equipped, and an efficient method of con- 

 trolling the product and preventing losses from spoiled wine has been 

 worked out. The ^nticultural work has also included studies of 

 adaptation, diseases (particularly Anaheim disease and mildew) 

 and disease resistance, grafting, pruning, fertilizers, etc. 



An important line of work has been poultry investigations, in- 

 cluding digestion experiments with hens, and studies of roup and 

 chicken pox. A study of the San Francisco milk sujjply has been 

 made in cooperation with the city authorities, and considerable data 

 have been collected regarding the control of bovine tuberculosis. Soil 

 studies have continued as formerly, including analyses of soil samples 

 from various sources, studies of soil moisture, green manures, and 



