SEEDS WEEDS. 757 



Practical forestry and its bearing on the improvement of estates, C. E. Curtis 

 (London: Lockwood, 1897, -pp. 132). 



Life and growth of forest trees, M. Busgen (Bau and Leben unsercr TFaldbdiime. 

 Jena: Gustav Fischer, 1897, pp. VIII, 230, Jigs. 100). 



Coniferous forests of Marne and their parasites, A. Bellevoye and J. Laurent 

 (Bui. Soc. Nat. Sci. Reims, 6 (1897), No. 3, pp. 59-64). 



How can we prolong the supply of white pine? F. Roth (Forester, 4 (1898), 

 No. l,pp. 21, 22). — Planting, care of seedlings, and protection from lire are recom- 

 mended. 



The history and value of osier willows, K. Hetz ( Korbmaeher. ZUj., 3 (1897), pp. 

 1-4; (ibs. in Bot. Centbl. Beihefte, 7 (1897), No. 4, p. 295). 



The yew and its distribution in Germany, P. Korschelt (Tliarand. Forst. 

 Jahrb., 47 (1897), No. 3, pp. 107-172). 



SEEDS— WEEDS. 



Experiments on the germination of seeds from different sized 

 fruits and from cells containing different numbers of seeds, Duke 

 of Bedford and S. U. Pickering (Rpt. Woburn Uarpt. Fruit Farm, 

 1897, pp. 160-163). — The seeds of 100 crab apples averaging; 1 oz. each 

 aiid the same number averaging h oz. were selected, and 60 seeds were 

 taken from the cells containing 2 seeds and 10 from cells containing 1 

 seed each. These were divided into lots and their germination and 

 viability compared. 



Comparing the germination of the seeds from the 1 and 2 seeded 

 cells in each lot of fruit, it was found that the difference was inappre- 

 ciable, being slightly in favor of the 2-seeded cells. 



In the comparison of the percentages of germination of seeds from i 

 oz. and 1 oz. fruits there was found a decidedly higher percentage in 

 the seeds with smaller fruits. Seedlings from the smaller fruits were 

 in nearly every case more robust than from the larger ones. 



These experiments are being repeated with other fruits and with 4 

 sizes of fruits to determine whether it is merely the relative size of the 

 fruits which affects the germinative power of seeds or whether the 

 results giveu above are due to the size of the fruits being abnormal as 

 compared with the average sized fruits of the tree. 



Investigations of clover and grass seed during 1894, G. GrRO- 

 tenfelt (Landtbrulcsstyr Meddel, 1896, No. 18, pp. 74). — The author 

 reports on the examination of 429 lots of clover and grass seed secured 

 from wholesale and retail dealers and from farmers. The usual data 

 relative to purity, germinative ability, etc., are given. 



A report is given on culture experiments made to determine the ori- 

 gin of. clover seed, the method by estimation of weed seed not being 

 wholly satisfactory. 



Out of 123 samples collected more than two-thirds proved to be 

 either in whole or part of American origin. The author claims that the 

 American clover will not withstand the climate of Finland as well as 

 seed of northern European origin. 



