534 EXPERIMENT STATION RECORD. 



Researches into some statistics of Coffea, P. C. van der Wolk (Ztschr. 

 Induktive Abstain, u. VererJ)ungsleJire, 10 {1913), No. 1-2, pp. 136-150, figs. 4; 

 11 {1913), No. 1-2, pp. 118-127, figs. 5). — In these two articles the author reports 

 a biometric study, conducted at the Buitenzorg Experimental Gardens, of 

 fluctuating variability in leaf length and internodal length in coffee plants. 



Sweet peas up-to-date, G. W, Kerr {Philadelphia, 191-'/, rev. ed., pp. 88, 

 figs. 14). — The author here presents descriptive lists of all knov^m varieties of 

 sweet peas, including novelties for 1914. Notes on the culture and training 

 of sweet peas are also given. The descriptions are based upon observations 

 made at the Fordhook Farms, Bucks County, Pa., trial grounds during the 

 past 6 seasons, as well as previous experience in England. 



New roses, Rose G. Kingslye {London and New York [1913], pp. 161-178). — 

 This pamphlet is offered as a supplement to the author's previous book on roses 

 (E. S. R., 21, p. 335), and contains descriptive lists of the more important 

 roses which have apiDeared since 1908. 



Insecticides and fungicides, E. P. Felt {N. Y. State Mus. Handl)00k 18 

 {1913), pp. 24)- — ^This pamphlet contains directions for the preparation and 

 use of the more important insecticides and fungicides, together with a bibliog- 

 raphy of entomological publications issued by the New York State Museum. 



Spraying- calendar for 1914, J. G. Hall and M. A. Yothers {Washington 

 Sta. Popular Bui. 59 {1914), folio). — Concise instructions are given for the 

 treatment of the principal pests and diseases of orchard fruits, including di- 

 rections for the preparation of spray mixtures. 



The new local option orchard and small fruit inspection law {Arkansas 

 Sta. Circ. 18 {1913), pp. 4)- — This circular contains the text of an act of the 

 general assembly of the State of Arkansas, approved April 2, 1913, to prevent 

 the increase and scattering of insect pests and plant diseases injurious to horti- 

 cultural plants and crops. 



The act creates a state board of orchard inspection, composed of the director, 

 entomologist, and plant pathologist of the station, and provides for inspection 

 in any township where the majority of the electors voting approve the adoption 

 of the act at a general election for state and county officers. Whenever three- 

 fourths of the townships of any county shall have adopted the provisions of the 

 act, they are to be extended to the entire county. 



FORESTRY. 



Shortleaf pine in Virginia. — The increase in its yield by thinning, W. W. 

 Ashe {Richmond, Ya.: Dept. Agr. and Immigr., 1913, pi). 44, pis. 7). — The 

 author here presents the results of a survey of the second growth shortleaf 

 pine in old fields in the middle portion of Virginia. The survey was conducted 

 cooperatively by the Forest Service of the U. S. Department of Agriculture 

 and the State of Virginia to ascertain the value of this shortleaf pine timber 

 for lumber uses, to determine the effect of lumbering on the future yields of 

 the stands and whether conservative methods of cutting could be employed 

 profitably, to determine the yield of stands of different ages, to recommend 

 methods of thinning and cutting to accelerate growth, and to devise methods of 

 protection for young growth. 



The subject matter is discussed under the following general headings: Dis- 

 tribution and importance, condition and position of old-field stands, manage- 

 ment, thinnings, production of cordwood from thinned and unthinned stands, 

 production of saw timber, value of trees and stands, waste in cutting small 

 trees, lumbering and restocking, planting waste lauds, and the protection of 

 stands. 



