Band 126. Nr. 11. XXXV. Jahrgang. IL Bd. Nr. 11. 



Botanisches Centralblatt 



Referirendes Organ 



der 



Association Internationale des Botanistes 

 für das Gesamtgebiet der Botanik. 



Herausgegeben unter der Leitung 

 des Präsidenten: des Vice- Präsidenten : des Secretärs: 



Dr. D. H. Scott. Prof. Dr. Wm. Trelease. Dr. J. P. Loisy. 



und der Redaction9-Commissi(yns- Mitglieder : 



Prot. Dr. Wm. Trelease, Dr. G. Bonaventura, A. D. Cotton, 



Prot. Dr. C. Wehmer und Dr G. H. Ostenteid. 



▼on zahlreichen Specialredacteuren in den verschiedenen Ländern. 



Dr. J. P. Lotsy, Chefredacteur. 



•Kq ofj I Abonnement für das halbe Jahr 15 Mark 1 



I durch alle Buchhandlungen und Postanstalten. 1^1*» 



Alle für die Redaction bestimmten Sendungen sind zu richten an: 

 Redaction des Botanischen Centralblattes, Haarlem (Holland), Spaarne 17. 



Mae Dougal, D. T., Annual Report of the Director of the 

 Department of Botanical Research. (Carnegie Institution 

 of Washington Year Book. p. 57—87. pl. 2 and 3. 1913.) 



A detailed account of the development of the botanic researches 

 carried out by merabers of the staflf treated under the foUowing 

 captions: the Salton Sea; the Cahuilla Basin and the Desert of the 

 Colorado; Geographica! Features of the Cahuilla Basin; the Geo- 

 logy of the Cahuilla Basin; Origin of Travestine, or Tufa, Deposits 

 of Salton Sink; Seventh Annual Analysis of the Salton Sea Water; 

 The Behavior of Micro-Organisms in Brines; Action of Salton Sea 

 Water on Vegetable Tissues; Analysis of the Flora of the Salton 

 Sink; The Repopulation of Sterilized Islands; The Occupation of 

 Sterilized Beaches and the Subsequent Changes; Modifications of 

 Plants under Specialized Conditions presented by Emersed Strands; 

 Analysis of the Effect of Climatic Complexes; Evolution of the 

 Chrysomelid Beetles; Treelessness in Prairie Regions; Root Varia- 

 tion in Desert Plants; The Root-Characters of Trees grown in the 

 Coastal Climate of California; The Transpiration Behavior of Rain- 

 forest Plants; Altitudinal Gradients of Growth-rate; Winter Tempe- 

 rature Phenomena in the Santa Catalina Mountains; The Water 

 relations of Plants; Autonomie Movements of Sterns of Opuntia; 

 Transpiration of a Desert Tree; The Photolysis of Plant Acids; 

 Photolytic Behavior of Blue-Violet Rays and their Variations in 

 Solar Radiation; Acidity, Gaseous Interchange and Respiration of 

 Cacti; Fruit Development in the Cactaceae; Relationships and Dis- 

 tribution of the Cactaceae. Harshberger. 



Bot an. Centralblatt. Band 126. 1914. 



18 



