imiVERSITT OF 0AI.IFOENIA PUBLICATIONS 



Note. — The University of California Publications are oflfered in excbange for tae publi- 

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 publications and other information, address the Manager of the University Press, Berkeley, 

 California, U. S. A. All matter sent in exchange should be addressed to The £zchang« 

 Department, University Library, Berkeley, California, U. S. A. 



OTTO HARRASSOWITZ E. FRIEDLAENDER & SOHN 



LEIPZIG BERLIN 



Agent for the series in American Arch- Agent for the series in American Arch- 

 aeology and Ethnology, Classical Philology, aeology and Ethnology, Agricultural Sci- 

 Education, Modern Philology, Philosophy, ences, Botany, Geology, Mathematics, Path- 

 Psychology, ology, Physiology, Zoology, and Memoira. 



AGRICULTURAL SCIENCES. — Charles B. Lipman, Ernest B. Babcock, and John W. 

 Gilmore, Editors. Price per volume, $5. 

 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. Kelley. 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 C. E. Lipman and P. S. Burgess. Pjd. 127- 

 139. March, 1914 .". 15 



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



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



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



Loughridge. 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 



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



11. Influence of the Composition and Concentration of the Nutrient Solu- 



tion on Plants Grown in Sand Cultures, by Arthur Hugo Ayres. Pp. 



341-394, pis. 5-15. January, 1917 60 



Vol. 2. 1. Studies in Juglans I. Study of a New Form of Juglans Calif ornica 

 Watson, by Ernest B. Babcock. Pp. 1-46, plates 1-12. December, 



1913 80 



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



Juglans Californica Watson and on Certain Supposed Walnut-Oak 

 Hybrids, by Ernest B. Babcock. Pp. 47-70, plates 13-19. October, 



1914 35 



3. Studies in Juglans, III: (1) Further Evidence that the Oak-like Walnut 



Originates by Mutation, by Ernest B. Babcock. Pp. 71-80, pis. 20-21. 

 September, 1916 10 



AGRICULTURE. — The Publications of the Agricultural Experiment Station consist of Bul- 

 letins and Biennial Reports, edited by Professor Thomas Forsyth Hunt, 

 Director of the Station. These are sent gratis to citizens of the State of 

 California. For detailed information regarding them address The Agri- 

 cultural Experiment Station, Berkeley, California. 



BOTANY. — W. A. Setchell, Editor. Price per volume, $3.50. Volumes I (pp. 418), II (pp. 



360), III (pp. 400), and IV (pp. 397) completed. Volumes V, VI, and VII 



in progress. 

 Vol. 3. 1. Compositae of Southern California, by Harvey Monroe Hall. Pp. 1- 



302; plates 1-3, with a map. December, 1907 3.00 



2. The Origin, Structure, and Function of the Polar Caps in Smilacina 



amplexicaulis Nutt., by H. D. Densmore. Pp. 303-330; plates 4-8. 



December, 1908 35 



S, 4. (In one cover.) The Value of Sodium to Plants by Reason of Its 



Protective Action. On the Effects of Certain Poisonous Gases on 



Plants. By W. J. V. Osterhout. Pp. 331-340. June, 1908 10 



