446 EXPERIMENT STATION RECORD. 



The introductory discussion deals witli tlie advantages of typical forms of 

 unlieated greenlionses, hints on construction, regulation of temperature, and 

 plants suitable and unsuitable. The suitable plants discussed include alpine 

 plants, foliage plants for grouping, hardy and half-hardy species of bulbs and 

 tubers, lillies, flowering shrubs, hard-wooded plants, roses, hardy perennials for 

 spring, autumn perennials, annuals and biennials, hardy orchids, and succulent 

 plants. 



An extensive appendix is made up of lists of these various forms of plants, 

 containing data relative to their height and color, habitat and season under 

 glass, soil requirements, and general remarks. 



FORESTRY. 



North American trees, N. L. Britton and J. A. Shafer (Neic Yorh-, 1908, 

 pp. X-{-894, figs. 781). — This work is one of an extensive series known as the 

 American Nature Series, which is to be produced under the guaranty of Ameri- 

 can experts and from the American point of view. The present work contains 

 systematic descriptions and illustrations of all species of trees known to be 

 indigenous in North America north of Mexico and the West Indies, including 

 all species which are known to become trees, even though they are almost 

 always shrubs. The relationships of the native and naturalized trees of North 

 America to those of other parts of the world are discussed, and the products of 

 trees useful in the arts, sciences, and industries are mentioned or described. The 

 illustrations show the character of the foliage, flowers, and fruit, and a number 

 of photographs illustrate the general aspect of certain species. A glossary of 

 special terms employed is appended. 



Wayside and woodland trees, E. Step {London, 1907, pp. 182, pis. 127, figs. 

 58). — A popular pocket guide to the British sylva, designed for the rural 

 rambler and nature lover. Part 1 includes species generally considered indig- 

 enous to the British Islands, with brief notes on closely related introduced 

 species. Part 2 is devoted to species of foreign origin. In addition to the common 

 and botanical name, the distinguishing characters of each species are pointed 

 out, together with notes on distribution, habitat, economic uses, etc. The photo- 

 graphs are an important feature of the work. The deciduous trees are shown 

 in both their summer and winter aspects, and illustrations are also given of 

 floral organs and in many cases of the bole. 



The conifers and other gymnosperms, F. W. Neger (Die Nadelholzer 

 {Koniferen) und iibrigen Gymnospermeii. L( ipsiv, 1907, pp. 185, figs. 85, maps 

 .'i). — This work contains systematic descriptions of the various genera and 

 species of gymnosperms, together with brief notes on their anatomy, morphol- 

 ogy, characteristics, distribution, and economic value. In an appendix the 

 various trees are grouped together according to the nature of their wood, seeds, 

 and seedlings, and maps are also given showing the geographic distribution of 

 the more important species. 



Observations on the species grown by the Section of Streams and Forests, 

 F. Albert {AUjiiiiai^ Ohscrracioncs sohre his Espvcics Cultivadas en la Seccion 

 de Aguas i Basques. Santiago de Chile: Sec. Aguas i Bosques, Min. Indus., 

 1908, pp. 68, figs. 19; An. Agron. [Santiago de Chile], 2 {1907), No. 4, pp. 

 585-650, figs. 19). — Notes are given on a large number of trees being tested by 

 the Section of Streams and Forests in Chile, including their origin, general 

 characteristics, and adaptability for different purposes. 



The manna gum (Eucalyptus viminalis), F. Albert (An. Agron. [Santiago 

 de Chile], 2 (1907), Ao. 3. pp. 3]8-S.'i9. figs. IJ/). — A monograph on this species 

 gf eucalyptus, including a botanical description with common names and 



