794 EXPERIMENT STATION RECORD. 



Notes are given on conifers for western planting and on forest plant- 

 ing ill the satid-liills region. General cultural notes are given whicli 

 are applicable to the cultivation of forest trees throughout the plains 

 region, with the exception of the sand hills. These notes consist of 

 directions for the preparation of the soil, planting, j^revention of root 

 exposure, cultivation, pruning and thinning. 



The influence of gases and smoke on the gro'wrth of conifers, R. Hartig 



(ForsU. natiirw. Ztschr., 6 {1S97), Xo. 2, pp. 50-60, figs. 2). 



Variation in maple trees, F. von Schiverin (Gartenjlora, 46 {1S97), Xo. 3, pp. 

 59, 60). 



Second growth of white pine in Pennsylvania, C. A. Keffeu {(inrchn and Ftrr- 

 vst, 10 (1S97), Xo. 47 J, pp. 92, ».'?). 



Concerning the value of the Weymouth pine (Finns strobus), L. Mappes (Alh/. 

 Forst. unci JiKjil. Zffj., 73 {1S97), pp. 51-55). 



Finns palustris in France, M. L. r>E Vilmorin {Garden and Forest, 10 (1S97), Xo. 

 474^ pp. 112, 113, fill. 1). — Notes are given ou some long-leaf pines planted in France 

 65 years ago. Two trees were 18 and 16 meters liigh and 1.7 and 1.5 in circumference. 

 The area adapted to this tree is said to be rather restricted. Loblolly pines planted 

 at the same time are nearly twice as great in bulk as the long-leaf pines. 



Conifers at the Kansas Agricultural College, F. C. .Sears (Ourdcn and Forest, 10 

 {1897), Xo. 473, p. 103). — Notes are given of tlie si^ruces. 



The Servian spruce {Gard. Chron., ser. 3, 21 {1897), Xo. 532, p. 153, fi^. 7).— Illus- 

 trated notes are given of Picea omorica. 



The rotation of species of trees under forest conditions, L. C. Corrett ( Garden 

 and Forest, 10 (1SD7), Xo. 474, p. 118). 



On the relation betAween floods and forests in Frussia, C. von Fisciibach 

 {Forstw. CenthL, 19 (1897), Xo. l,pp. 1-10). 



Methods of exploitation and their influence on forests, K. Gayer {-ill(/. Forst. 

 und .Jagd. Ztf/., 73 {1897), pp. 37-43). 



Tables of forest production, A. Schiffel (Ccnthl. r/es. Forstw., 23 {1897), Xo. l,pp. 

 6-28, figs. 3). 



Handbook of forestry, I. M. Lizius {Handhnch der forsilichen Haulunde. Berlin: 

 Paul Parey, 1896, pp. XI, 250, figs. 274). 



The relation of forests to farms, 15. E. Fernow ( U. S. Dept. Agr. Yearhook 1895, 

 j)p. 333-340, figs. 3). — The author illustrates the erosive action of water and the 

 methods by which the farmer may reclaim the lost ground, and discusses the relation 

 of forests to the farm in preserving the precipitation, in making the temperature 

 more equable, in protection from extremes of precipitation and drought, and in 

 supplying the farm with useful materials. 



SEEDS— WEEDS. 



The worst weeds of Wyoming, A. Nelson ( 'Wyoming St a. Bid. 

 31., pp. 265-320, Ji(js. 15). — Popular notes are given on the nature, evo- 

 lution, distribution, and classification of weeds, with detailed descrip- 

 tions and methods for eradication of the following: The Kussian 

 thistle {Salsola l-ali tragus), squirrel-tail grass {Hordeum juhatum), 

 cockle {Saponaria vaccaria), Canada thistle [Carduus arvensis), bull 

 thistle {C. lanceoJatns), i^rickly lettuce {Lactnca scariola), buffalo bur 

 {Solanum rostratum), poverty weed [Ira a.rUlaris), perennial franseria 

 {Franseria discolor), thorny amaranth [Amarantus spinosus), common 



