SEEDS WEEDS. 301 



tering- of beech, and yoke elm. In pursuauce of the investigations, 

 accuiiate censuses were taivcn in 18<Si*, 18S0, ami 189.), and tables are 

 jiiven showing- the statistics and results. 



At the present stage of the investigations the trees in the tract 

 where the larger trees were left appear to be growing most vigorously, 

 and both of the tracts experimented upon show a greater growth than 

 the check tract. The beeches show a rate of growth nearly doui)le that 

 of tlie other species. 



The turpentine tree, J. H. Maiden (.Iry/. Gaz. X. H. IT., j (iS'^i), 

 No. /,2^P- 4:63-407^ pi. 1). — Botanical and economic notes on Synearpia 

 laiirifolia, au Australian tree, the timber of which makes very durable 

 ])osts and piles. The lasting quality is believed to be due to a brown 

 oleo-resin contained in the wood, ami which may prove of commercial 

 importance. The timber is very hard to burn, and so recommended for 

 building. The trees grow from 120 to 180 ft. high and 20 to 30 ft. in 

 circumference on good soil, of which its presence is an indication. Its 

 thick foliage nuikes it desirable for i)arks. 



Notes on "West American Coniferae, J. G. Lemmox (Erjitliea. ..' (ISf)4), Xo. 10, pp. 

 157-162). 



Concerning the cultivation of pines in central Europe, ^. Si.amcek (Forstiv. 

 Ceuthl., 20 (1S94), pp. 355-3GS). 



Hybridity in -willo-ws, F. Bixkwitu (I'rov. Jiochester Acad. ScL, :J (1894), Xo. 3, 

 pp. 254-256). 



The thinning of forests, I and II {Card. Chron., 16 (1S94), ser. .?. 2)p. 364-366, 

 401,402). 



Prairie woodla.ids, E. J. Hill (Garden and Forest, 7 (1S94), Xo. 347, pp 412, 

 413). — A (liscussinii of tlie character of the shrubby and woody growths fouudiumoist 

 localities in prairie regions. 



Trees of Nebraska, C.E. Bessey (Ann. Upt. Xebr. Bd.Affr., 1S94, pp. 9S-127; abs. 

 in Garden and Forest, 7 (1S94), p. 3S9). 



Biological investigations of the -wooded valleys of Sweden, A. Y. Grevillius 

 {Boi. ZUj., 52 (1894), Xo. 8 and 0, pt. 1, pp. 147-108). 



SEEDS— WEEDS. 



Saving and care of seed, L. K. Taft (Amer. Agr. ()niddle ed.), 1894, Oct. 6, p. 159). 



The -weight of a grain of wheat, J. U. Lloyd (Amer. Jour. Pharm., 06 (1894), 

 No. 10, pp. 473-479). 



Defective germination in -wheat, E. Schribaux (Prog. Agr. et I'it., 11 (1894), 

 Xo. 40, pp. 377,378; Jonr. Agr. Prat., 58 (1894), Xo. 4, pp. 493, 494). 



The influence cf fungicides upon the germination of seeds, L. H. Pammel 

 and F. C. Stewakt (.Igl. ^'ci., 8 (1894), Xo. 5, pp. 215-231). — A r«'sumo of the 

 results secured by other investigators, and tabulated information of'experimeute by 

 the authors with corn and oats. 



Concerning the dissoluticn of the secondary cell membranes of seeds during 

 germination, T. Elfkrt (Jlibliotheca Botanica, 1894, Xo. 30, pp. 20). 



The Russian thistle, W. .M. Hays (.Minnesota Sta. Bid. 33, pp. 10, figs. 3).— The 

 author gives a popular description of the Eussian thistle (SalsoU lali tragus), and 

 suggests various methods by -which it may be eradicated. The necessity of adequate 

 weed laws and their enforcement is pointed out. 



Methods of destroying weeds, Wittmack (Braunschw. tandw. Zty., 62 (1894), 

 No. 36, pp. 153,154). 



