UNIVERSITY OF CALIFOIINIA PUBLICATIONS 



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AGRICULTURAL SCIENCES.— C. B. Llpman, H. S. Seed, R. E. Claus^a, Editors. Price 

 per volume, $5. Volumes 1 (587 pages), 3 (509 pages), and 4 (450 pages) completed. 

 Volumes 2 and 5 In progress. 



Vol. 1. 1. The Distribution and Activities of Bacteria in Soils of the Arid Region, 



by Charles B. Lipman. Pp. 1-21. October, 1912 $0.20 



2. Studies on the Phenoldisulphonic Acid Method for Determining Nitrates 



in Soils, by C. B. Lipman and L. T. Sharp. Pp. 23-37. October, 1912 15 



3. The Effects of Calcium and Magnesium Carbonates on Some Biological 



Transformations of Nitrogen in Soils, by W. P. KeUey. Pp. 39-49. 

 December, 1912 10 



4. The Aluminum Reduction Method as Applied to the Determination of 



Nitrates in "Alkali" Soils, by Paul S. Burgess. Pp. 51-62. May, 1913 .15 



5. Studies Upon Influences Affecting the Protein Content of Wheat, by G. W. 



Shaw. Pp. 63-126. October, 1913 _ 75 



6. The Effect of Copper, Zinc, Iron and Lead Salts on Ammonification and 



Nitrification in Soils, by O. B. Lipman and P. S. Burgess. Pp. 127-139. 

 March, 1914 15 



7. Studies on Ammonification in Soils by Pure Cultures, by O. B. Lipman and 



P. S. Burgess. Pp. 141-172. April, 1914 _ _ 25 



8. Humus and Humus-Nitrogen in California Soil Columns, by R. H. Lough- 



ridge. Pp. 173-274. August, 1914 1.00 



9. New Experiments on Alkali Soil Treatment (Preliminary Report), by 



Charles B. Lipman and Leslie T. Sharp. Pp. 275-290, plates 1-4. June, 

 1915 „ 15 



10. Fundamental Interrelationships between Certain Soluble Salts and Soil 



CoUoids, by L. T. Sharp. Pp. 291-339. April, 1916 _ 50 



11. Influence of the Composition and Concentration of the Nutrient Solution 



on Plants Grown in Sand Cultxures, by Arthur Hugo Ayres. Pp. 341-394, 

 plates 5-15. January, 1917 60 



12. Certain Effects under Irrigation of Copper Compounds upon Crops, by 



R. H. Forbes. Pp. 395-496, plates 16-19. March, 1917 „ _ 1.00 



13. Experiments on the Effects of Constituents of Solid Smelter Wastes on 



Barley Growth in Pot Cultures, by C. B. Lipman and W. F. Gericke. Pp. 

 495-587. March, 1917 95 



Vol 2. 1. Studies in Juglans. I. Study of a New Form of Juglans califomica Wat- 

 son, by Ernest B. Babcock. Pp. 1-46, plates 1-12. December, 1913 60 



2. Studies in Juglans. II. Further Observations on a New Variety of Juglans 

 califomica Watson and on Certain Supposed Walnut-Oak Hybrids, by 

 Ernest B. Babcock. Pp. 47-70, plates 13-19. October, 1914 ^ 



S. Studies In Juglans. m. (1) Farther Evidence that the Oak-like Walnut 

 Originates by Mutation; (2) A Parallel Mutation In Juglans hlndsii 

 (Jepson) Sargent, by Ernest B. Babcock. Pp. 71-80, plates 20-21. Sep- 

 teniber, 1916 . .10 



4. Mutation in Matthiola, by Howard B. Frost. Pp. 81-190, plates 22-35 



November, 1919 ._._: IJVO 



5. Interspecific Hybrids in Crepis. I. Crepis capillaris (L.) Wallr. X C. tec- 



torum L., by Ernest B. Babcock and Julius L. Collins. Pp. 191-204, 

 plates 36-38. October, 1920 20 



6. Inheritance in Crepis capiUaris (L.) Wallr. I. Inbreeding and Cross-breed- 



ing in Crepis capillaris (L.) Wallr., by Julius L. Collins. Pp. 205-216, 

 plates 39-41. November, 1920 - .30 



