144 EXPEKIMENT STATION RECORD. 



tea, Cedrus atlantica, Juniper us drupdcca, J. chincnuis, (Jcphalotaxus 

 dnqyacea, C. fortunei, and G. pedunculata. 



The effect of clearing away the dead wood in a forest, F. ]5Ari;K (Forslw. 

 CctithL, IC {IS'.ii), So. t;, 2>P- ^77-2i)4). 



The effect of inundation on the forests of Bohemia, F. Bauku {Forstw. Ccnthl., 

 II ■> (1S!>I), Xo. i:, pp. :?Dl-..'99). 



Effect of sun and frost cracks on the oak, II. IIaktk; ( /'o/.W. luitnnr. ZtacJir., 3 

 {1S94), Xo. 0, pp. 235-260). — A gcnoial discussion of their oiij^iu, and ct't'ect on tho 

 timber. 



The tallow wood (Eucalyptus microcorys), .1. H. Maiden {Ayr. Gaz. X. S. W., 

 5 {1S94), Xo. '>, pp. 2S0-2:)7, fuj. 1). — Xotes on its oil and i?iim, and a discussion of its 

 timber value and of its distribution in Australia. 



Two new willow hybrids, E. F. Linton {Jour, of Jiotaii/i, nritiah, .7? [ISni), p. 

 201). — Descriptive notes on a hybrid between ^ullx naprea and S. mii)\si)iitr8, and on 

 iSalix cerniia, a hybrid or new species. 



WEEDS. 



The Russian thistle, L. H. Dewey {U. 8. T)ept. Agr., Division of 

 Botaiii/., Hid. ir,^ pp. .l'H, jjIs. 3, maps 2). — This bulletiu gives the history 

 of the Eussiaii thistle {Salsola kali fraf/us) as a weed in the United 

 States, with an account of the means aviiihible tor its eradication, and is 

 sni)plenientary to Fanners' ijuHetin 10 by the same division (E. S. R., 4, 

 p. GOO). Popnhir and technical descriptions are given of this weed, 

 together with notes on its origin and history. The plant was intro- 

 duced into this country in Bouhoninie County, South Dakota, from 

 Kussia. in 1873 or 1871. Since that tiniC' it has spread over 35,000 

 square miles, and is very troublesome over 25,000, causing serious 

 losses to the farmer. It is distributed by the plants being blown about 

 by the wind, through uncleaned seeds, and by the railroads. 



Theidant is an annual, the seed short lived, and by concerted action 

 in preventing any from seeding for several years it may be eradi- 

 cated. Clean cultivation of crops and careful attention to the waste 

 places are the precautions to be observed. Building fences and i^lant- 

 ing' trees are recommended as means for the prevention of its wide 

 distribution by rolling. 



The text of the weed laws of North and South Dalcota is given. The 

 maps of distribution show that it is already found in 7 States, being 

 most- abundant in North and South Dakota, Nebraska, Iowa, Minne- 

 sota, Wisconsin, and Colorado, in the order named. 



Weeds and weeding, A. N. M' Alpine and 11. P. Weight {Trans. 

 Highland and Agl. Sac. Scotland, 1891., pp. 1-69). — The authors give in 

 popular terms much valuable information on weeds and the means f(n" 

 destroying them. Various classitications are given, based on duration, 

 habits of growth, and methods of multiplication. Directions are given 

 for the destruction of weeds in general, together with specific means to 

 be adopted against certain of the more troublesome species. Detailed 



