1917] HOBTICULrUBE. 43 



of culture; Insects, diseases, and frost; varieties; and statistics on acreage, 

 productiou, and value. 



The forcing of strawberries, Florence I. Kinnison {Colorado Sta. Bui. 222 

 (I'JJl), pp. 8, figs. 2). — The forcing experiment with strawberries, here de- 

 scribed, was conducted with the view of studying the cultural methods and the 

 best varieties for forcing. 



Marshall and Glen Mary proved to be the best two vai-ieties for forcing, 

 the former being used as a pollenizer for the latter. New crowns produced a 

 heavier yield and larger and better berries than old ones. It is concluded that 

 forcing strawberries can be made profitable with the berries selling at 25 cts. 

 a half a pint. 



Marliceting and distribution of strawberries in 1915, O. W. Schleussnek 

 and .3. C. Gilbert {V. S. Dept. Agr. Bui. 477 (1911), pp. 32, pis. 4, figs. 10).— A 

 review of the 1915 strawberi-y season in the United States, based upon observa- 

 tions made by the authors at shipping points and by members of the staff 

 working in the markets. The subject matter is presented under the generaj 

 headings of methods employed in dealing with strawberry pickers; cooperative 

 associations ; sales methods commonly employed ; transportation ; a study of 

 the Louisiana district; extent, length, and volume of movement from all dis- 

 tricts; comparison of prices received for strawberries on important markets; 

 average quality of strawberries shipped ; distribution of strawberries in 1915 ; 

 and total strawberry shipments in 1915. In addition to tabular data given, 

 the distribution and total strawberry shipments from various sections is illus- 

 trated by charts. 



Behavior of the root system of various graft stocks, L. Ravaz {Prog. Agr. 

 et Vit. {Ed. I'Est-Centre), 38 {1911), No. 10, p. 227).— The author gives some 

 tabular data showing the average number and size of roots of various Ameiican 

 grape stocks used in vineyard reconstitution. In certain stocks it is observed 

 that the number of roots is always few but they are generally large and long, 

 whereas in other stocks the roots are very numerous, small, and short. 



Oil percentage in different varieties of olives, H. E. Laffer {Jour. Dept. 

 Agr. So. Aust., 20 {1911), No. 7, pp. 5^8, 5^9). — Analyses for one season are 

 given showing the oil percentage in 13 different varieties of olives growing 

 at the Roseworthy Agricultural College. The oil content of the fresh olives 

 ranged from 11.51 to 27.29 per cent. 



Citrus fertilization experiments in Porto B.ico, C. F. Kinman {Porto Rico 

 Sta. Bui. 18 {1917), Spanish Ed., pp. 34, pis. 2, figs. 2).— The English edition of 

 this bulletin has been previously noted (E. S. R., 33, p. 241). 



Some profitable and unprofitable coffee lands, T. B. McClelland {Porto 

 Rico Sta. Bui. 21 {1917), pp. 13, pis. 2, figs. 5). — This bulletin, which is based 

 upon studies of Porto Rican coffee soils extending over a number of years, 

 gives specific instances in which coffee is being grown on lands suited for 

 coffee culture and on lands unsuited for coffee culture, together with informa- 

 tion relative to the selection of good coffee lands and the improvement of poor 

 lands when they are to be used for growing coffee. It is pointed out, however, 

 that many of these poorer soils should be devoted to pasture or forests or 

 some other crop for which the land may be better adapted. 



What tea planters can and must do for selection, C. P. C. Stuart {Dept. 

 Landb., Nijv. en Handel [Dutch East Indies], Meded. Proefstat. Thee, No. 48 

 {1916), pp. 22). — The author reviews the work of the Buitenzorg tea station in 

 the development of improved strains of tea, and outlines practical selection 

 investigations which must be conducted by the planters in order to render the 

 selection work of practical value. 



