Floristik, Geographie, Systematik etc. 109 



Gleason, H. A.. Botanical Sketches from theAsiaticTro- 

 pics. (Torreya. XV. p. 93-101, May 1915 (Japan); p. 117-133. 

 June 1915 (Philippines); p. 139—153. July 1915 (Philippines); p. 

 161 — 175. August 1915 (Java); p. 187—202. Sept. 1915 (Java).) 



These papers give the author's impressions of the tropic Vege- 

 tation, the botanic gardens, the agriculture, the horticulture, the 

 cultivated plants and incidentally the people and the customs of 

 the countries visited , as above noted. A number of figures accom- 

 panied each paper taken by Gleason during his travels. 



Harshberger. 



t5^ 



Hall, H. M., Flora ofthe Pacific Coast. (Nature and Science 

 on the Pacific Coast. p. 147—158. 1915) 



A Sketch of the flora of the Pacific Coast issued as part of 

 a volume published as a guide book for scientific travellers in the 

 wrest, and edited under the Pacific Coast Committee of the Ameri- 

 can Association for the Advancement of Science. Hall divides his 

 chapter into several sections: Coastal formations, plains and lower 

 foothill slopes, the chaparral, the mountain flora. The flora of the 

 northwestcoast and localities of special botanic interesl are consi- 

 dered with a list of the more important books of reference. 



Harshberger. 



Harper, R. M., Some Correlations between Vegetation 

 and Soils, indicated by Census Statistics. (Science. N. S. 

 XLII. p. 500—503. Oct. 8, 1915.) 



A brief study is made of different types of soils in order to 

 determine whether these soils influence the distribution of evergreen 

 trees. The results of the study are tabulated for 24 states into 4 

 columns: percent of everygreens, improved land (1880), fertilizer 

 per acre (1909—10), average rank The percent of evergreens in 

 Florida is 91,5 percent and in Indiana, another extreme. 0.1 

 percent. The author concludes that the correspondence of ever- 

 green percentage and soil fertility is as close as could reasonably 

 be expected. Harshberger. 



Harper, R. M., The Natural Resources of an Area in 

 Central Florida. Vegetation types. (Annual Rep. Florida 

 Geol. Surv. p. 117—188. 1915.) 



The report includes an account of the geology. the mineral 

 resources, the native Vegetation and the soils. The following types 

 of Vegetation are described by Harper: Shallow lakes, ponds and 

 prairies, scrub thickets, the scrub palmetto flatwoods or low pine 

 land, high pine land, red oak woods, sandy hammocks. calcareous 

 high hammocks, lov^ hammocks. calcareous swamps and streams 

 Short leaf-pine and cabbage palmetto bottoms, clayly pine woods or 

 open flatwoods. The plants. noted as to their frequenc}', are clas- 

 sified in the lists as trees, wood}' vines, shrubs and herbs. Its 

 summary and conclusions brings in the coefificients of Community. 



Harshberger. 



Harshberger, J. W., TheDiversityofEcologicConditions 

 and its Influence on the Richness of Floras. (Proc. Acad. 

 Nat. Sei. Phila. p. 419—425. 1915.) 

 Ecologic conditions are those which are associated with the 



