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OTTO HAEEASSOWITZ E. FEIEDLAENDEE & SOHN 

 LEIPZIG BEELIN 

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

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

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

 Psychology, ology, Physiology, Zoology, and Memoirs. 



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

 Gilmore, Editors. Price per volume, $3.50. 

 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 



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2. Contributions to cytoiogicai Tecimic[ue, Dy w.' j. v. osternout. trp. 



73-90; 5 text-figures. June, 1904 25 



S. Limu, by WiUiam Albert Setchell. Pp. 91-113. April, 1905 _ 25 



4. Post-Embryonal Stages of the Laminariaceae, by William Albert 



Setchell. Pp. 115-138; plates 13-14. April, 1905 25 



5. Regeneration among Kelps, by William Albert Setchell. Pp. 139-168; 



plates 15-17. July, 1905 80 



6. A New Genus of Ascomycetous Fungi, by Nathaniel Lyon Gardner. 



Pp. 169-180; plate 18. July, 1905 - 15 



