338 EXPEKIMENT STATION RECOED, 



The work as a wbole is offered as a contribution to the foundation of an 

 American style of gardening. Tlie text is fully illustrated. 



General features of a park system for Chattanooga, J. Nolen (Boston, 

 1911, pp. IV+27, pis. 7). — This comprises a report to the Board of Park Com- 

 missioners of Chattanooga. A selected bibliography of parks and related topics^ 

 together with a map showing the general features of a park system as planned 

 by the author, are appended. 



The engineer's work in grading landscape areas, J. N. Ambleb (Engin. 

 News, 66 (1911), No. 23, jxp. 678, 679, figs. 2).— A short discussion relative to 

 the treatment of various grading problems in landscape areas. The subject is 

 discussed under the following headings : Surveys and maps, grade surface plane 

 and level, grade surface plane and inclined, grade surface warped, regular 

 curved surfaces, terraced and broken surfaces, irregular, curved, broken, and 

 undulating surfaces, cut and try method, " molded contour " method, method 

 of sections, method of axiometric projection, and execution of the work. 



FORESTRY. 



Forest physiography, I. Bowman (New York, 1911, pp. XXII-\-759, pis. Q, 

 figs. 292). — This comprises a guide to the physiography of the United States 

 and principles of soils prepared especially for students in forestry. 



In part 1 consideration is given to the importance, origin, physical and chem- 

 ical features, water supply, temperature, humus, and nitrogen supply of soils, 

 the soils of arid regions, and soil classification ; part 2 describes in turn the 

 physiographic features of the various regions in the United States; and the 

 appendixes contain a scheme of soil classification based upon the mechanical 

 composition of soils, an outline for a soil survey in forest physiography, and 

 analyses of a number of soil types. 



History of forestry, B. B. Fernow (Toronto, Canada, and Cambridge, Mass., 

 1911, 2. ed., rev. and enl., pp. XI-\-506-\-X). — In the present edition of this work 

 (E. S. R., 22, p. 738), it is stated that many inaccuracies which occurred in 

 the first edition through lacli of sufficient information have been corrected, and 

 the chapter on France has been entirely rewritten and considerably enlarged. 



Annual report on the literature and important happenings in the realm of 

 scientific forestry, forest zoology, agricultural chemistry, meteorology, and 

 forest botany for the year 1910, H. Weber (AlJg. Porst u. Jagd. Ztg., 1911, 

 Slip., pp. F7/7+i7i).— As in previous years (E. S. R., 23, p. 739), this supple- 

 ment contains abstracts of the important literature of the various phases of 

 forestry, together with notes on the important occurrences in the forest world 

 for the year 1910. Through the assistance of foreign correspondents, the liter- 

 ature has been made much more international in its scope. The topics included 

 are soil physics, silviculture, forest protection, forest pathology, utilization, 

 technology, management, valuation and statics, mensuration and yields, road 

 building, policy, administration, history, statistics, news of forest unions and. 

 hunting clubs, and the zoology of game and fish. 



On the valuation of the form of forest trees. — II, The primary type of the 

 pine, T. Jonson (Skogsvdrdsfdr. Tidskr., 1911, Fackafd., No. 9-10, pp. 285-329, 

 fig. 1). — Investigations conducted by the author on the primary type and cubical 

 content of pine are reported. 



The identification of important North American oak woods, based on a 

 study of the anatomy of the secondary wood, G. B. Sud worth and C. D. Mell 

 (U. 8. Dept. Agr., Forest 8erv. Bui. 102, pp. 56, figs. 48). — This bulletin de- 

 scribes the characteristics of the wood and wood elements of 35 oaks, which 

 include all of the commercially useful woods and a number of other species, 



