844 EXPERIMENT STATION RECORD. 



1896, pp. 382-396). — Discusses the origin and value of forests, their importance, and 

 how they may be restored. 



Forestry for farmers, 15. E. Fernow ( U. S. Dept. Agr., Farmers' Bui. 67, pp. 48, figs. 

 15). — This is a reprint from the Yearbooks of this Department for 1894 and 1895 

 (E. s. ];.. 7, p. 508; 8, p. 794). 



Care of woodlands, W. H. Buckhout {Pennsylvania Sta. Bpt. 1S96, pp. 122, 123).— 

 Notes are given on the care of oak woodlands by which they may be made more 

 productive. 



Forest conservation, A. J. Boyd (Queensland Agr. Jour., 1 (1897), No. 6, pp. 478- 

 482). 



Sheep grazing in forest reserves, F. V. Coville (Forester, 4 (1898), No. 2, pp. 

 30-32). 



American oaks in Campine (Bui. Soc. Cent. Forst. Belg., 5 (1898), No. 1, pp. 

 45-60). — Notes are given on Quercua rubra, Q. palustris, Q. tinctoria, Q. coccinea, Q. 

 phellos, and Q. imbricaria. 



Culture of pines in the Main-Rhine Valley (Forstw. Centbl., 20 (1S98), Xo. 2, 

 pp. 66-72). 



On the growth of the buds of Pinus sylvestris, E. Berger (Bui. Soc. Cent. 

 Forst. Belg., 5 (1898), No. 1, pp. 26-36). 



On the collection of forest tree seed, E. Parisel (Bui. Soc. Cent. Forst. Belg., 5 

 (1898), No. l.pp. 13-26). 



On the effect of lime rings on the health of fir trees, A. Cieslar (Centbl. Gesam. 

 Forstw. Wien, .'4 (1898), No. l.pp. 21-34, figs. 8). 



Structure and weight of the best coniferous timber, R. Hartig (Forsil. Natunv. 

 Ztschr., 7 (1898), No. 1, pp. 1-19). 



Conifers of the Pacific coast, J. G. Lemmon (Sierra club /;»/., .' (1898), No. 3, 

 pp. 156-173, pis. 3). 



Evergreens — their use and value, E. H. Ricker (Nebraska State Bd. Hort. Bpt. 



1897, pp. 56-61, figs. 8). — Notes arc irj V en on the value of different evergreens for 

 forest planting, together with directions for their propagation. 



Ash of Gidgea acacia (stinking wattle), F. B. Guthrie (Agr. Gaz. New South 

 Wales, 8 (1897), N<>. 1 :. pp. 868, 869). — An analysis of the ash of Gidgea acacia is 

 reported; also a partial analysis of the leaf. 



SEEDS— WEEDS. 



Preliminary report on the artificial use of enzyms in germina- 

 tion, F. A. Waugh ( Vermont Sta. h'pl. 189 6-' 97, pp. 100-111, figs. 2).— 

 The author reports upon a series of experiments conducted with various 

 unorganized ferments to ascertain their effect on the germination of 

 various seeds. The enzyms used were pepsin, diastase, extractum 

 pancreatis, trypsin, enzymol, and diastatic essence of pancreas, usiug 

 them in different strengths of solution. Among several hundred pre- 

 liminary experiments, many gave negative results and frequently the 

 effect of the enzym solution was detrimental. The temperature at 

 which the treatment and germination are made is of great importance, 

 and it seems probable that the particular enzym combination must be 

 separately determined for each species of seed. The author has tabu- 

 lated the results of his experiments with tomato, cucumber, radish, and 

 watermelon seeds ranging from 5 to 12 years old. The seed were soaked 

 in different solutions from 24 hours to 1 week before planting, and the 

 percentages of germination are compared. 



