FORESTRY. 1145 



The influence of the stock on the product of the graft, F. Paulsen {Bol. 

 Vffic. Min. .[(jr. Indus, c Com. [lioitic], li {l!)01), VI, No. 7-8, pp. 8(>5-878). — 

 With a view of ascertnininj:; wliat influence, if any, is exerted liy various Ameri- 

 can grapes used as stoclvs on wliicli native Sicilian vines are jirafted, the author 

 sent out inquiries to 200 viticulturists. A sunnnarized account is given of the 

 information secured, together witli tal)ulated aualyses of wine produced from 

 vines grafted on various American stoclcs. 



The author comes to the general couchision that American stoclis have with 

 few exceptions increased the production without essentially deteriorating the 

 quality, and that in some cases the quality has been improved. Although no 

 definite conclusion is reached as to the exact method hy which the stock im- 

 proves the product, it was found that not all of the European varieties were af- 

 fected in the same manner. The favorable influence appeared to Ite more marked 

 on calcareous soils. The varieties recommended as being adapted for Sicilian 

 soils, and to have good affinity for the grafts, are r>erlandieri and its hybrids, 

 especially Rii)ariaXBerlan(lieri, AramonXRupestris Ganzin and R. du Lot, 

 and Riparia Gloire and Grand Glabre. 



Nut growing in Maryland, C. P. Close (Muri/htiid Sta. Bui. 125, pp. 196- 

 217, figs. I'l). — This bulletin ccmtains a report on a nut survey of the State 

 made by the station in 1007, together with directions for jn'opagating and plant- 

 ing Persian walnuts and pec-ans, and for top-grafting or budding black walnut 

 trees and unfruitful or inferior Persian walnut trees to improved varieties of the 

 Persian walnut. Descriptions are given of desirable varieties of Persian wal- 

 nuts and pecans. 



As a result of the nut survey the author is. of the opinion that the Persian 

 walnut can be iirofitably grown in Maryland under proper treatment. It is also 

 believed that the most hardy varieties of pecans will also succeed, although but 

 a few named varieties of the improved sorts have thus far been tried. 



Some problems in experimental horticulture, W. M, Munson {Proc. Sac. 

 Prom. Ayr. ^cL, 28 {1H07), pp. 122-12S). — In this paper the author presents for 

 discussion a few problems dealing with plant breeding and acclimatization, 

 which it is believed should be accorded more attention at the stations. 



FOKESTRY. 



The forestal formation of woodlands, H. Reuss {Die ForstUcJic Bcstandes- 

 yrilnduug. Berlin, 1907, pp. XIV+39S, figs. 6.'i). — This work is said to be based 

 on modern principles, and is intended as a text-book and manual for instruc- 

 tion and px'actice in the development of woodlands. Part 1 deals with wood- 

 land development by means of seeds, including natural regeneration and ar- 

 tificial development by means of seed and plants, part 2 treats of regeneration 

 by means of sprouts, and part 3 contains specific instructions for the use of all 

 Ihe important wood species in the development of woodlands. In an appendix 

 an extensive list, with cross references, is given of the authorities and pi'actical 

 foresters quoted, together with a bibliography of the more recent forest litera- 

 ture. dealing with the various phases of woodland development. 



Some fundamental principles of sylviculture as stated by Prof. Heinrich 

 Mayr, It. Zo.x and A. T. 1*>olsi:n {Forvshi/ Quart., 5 {191)7), Ao. 2, pp. 17.)— 

 189). — This statement of principles, which originally ai)peared in Allgcinclne 

 Forst- und J (igd-Zcitung. for 1U01, is said to represent the accumulated experience 

 and the crystallized net achievement of many years' observation of tree growth 

 under the most varied conditions of soil and climate, and is here translated 

 with the view of making it available to American foresters. 



