HORTICULTURE. 1141 



pears, chorru's. and iiluiiis. All the iduiiis li'stod woro found to be self-sti»rilo. 

 Flemish P.eanty pear and Dyebouse cherry were stronjily self-fertih>. 



Kesnlts of variety and cultural tests with vegetables grown both in the 

 open and un(h>r glass are given. 



Mushi-oom and truffle culture, II. L. A. Blanchon {Culture des Champif/iKiii.'i 

 et de la Truffv. Paris, Ji)06, ;>/>. /6'.J).— In this work practical directions are 

 given for the growing of nmshrooni spawn and the culture of the various species 

 of iinishroonis in caves, quarries, and in the open air, together with culinary 

 recipes and the methods of conserving mushrooms. The various phases of 

 truffle culture are also considered, including the methods of propagation, plant- 

 ing, cultivation, harvesting, and reconstruction of truftle plantations, together 

 with notes on yields and returns, culinary recipes, and methods of conservation. 



Statics of fruit culture, Steglich {Arb. Dcut. Landir. (JcsrU., 1907, No. 132, 

 pp. I.'p', //f/.s'. 2). — The author presents a large amount of tabular data relative to 

 long-continued observations and investigations conducted under the direction 

 of the German Agricultural Society, the National Horticultural Society of 

 Saxony, and various pomologists and practical orchardmen, dealing with tree 

 weights, measurements, yields, etc., of sevei-al varieties of the more important 

 fruits, including the apple, pear, cherry, and plum, grown on a variety of soils. 



The data sliow the weight relations of the roots, ti'unk, branches, and leaves 

 to the diameter and length of the main trunk, the annual growth increment of 

 the trunks, the annual increase in wood, the annual leaf and fruit production 

 and their relation tt> the trunk circumference, and chemical analyses of the 

 vegetative organs and fruit of the trees. 



From these data the author has derived a system for estimating the manurial 

 requirements of individual fruit trees, in which the trunk circumference is used 

 as the determining factor. A table is given showing for the api)]e, pear, cherry, 

 and plum their estimated content in the wood, leaf, and fruits of green and 

 dry substance, nitrogen, phosphoric acid, potash, and lime for each centimeter 

 of trunk circumference from 15 cm. up to 100 cm. witli the plum and up to 150 

 cm. with the other fruits mentioned. The application of the data given is 

 explained and tables are also given to be used in preparing various combinations 

 of fertilizers. It is recommended that the amount of plant food applied to an 

 individual tree range from two to four times the computed amount of plant 

 food removed from the soil by that tree, depending upon the nature of the 

 soil as to its fertility, texture, etc. 



Orchard notes, 1907, W. M. Munson (Maine )S7«. lUil. l.i'), pp. I2')-1.')(;, lUjiiis. 

 ^). — This bulletin contains a general summary of investigations conducted by 

 the station in the Kennebec County orchards for several years past relative to 

 the comparison of culture and mulching as a practical treatment for young 

 orchards, fertilizer experiments, and work in orchard renovation and top- 

 grafting (E. S. K., 18, p. 1129). Some data are also given on a comparative 

 test of the Fisher and station fertilizer formulas and on the orchard work at 

 New Gloucester, together with notes on the behavior and present condition of 

 the apples in the station orchards at Orono. 



The general conclusion reached I'elative to the work in the Kennebec County 

 orchards, and iireviously published, were further confirmed in 1007. The severe 

 winter of 1000-7, however, destroyed many of the trees, and owing to this 

 occurrence, togetlier with the withdrawal of the author from the station, most 

 of the work was brought to a close. Tabular data are given showing the 

 annual growth of trees and yield of fruit in the cultivated and mulched areas 

 Jfor the years lOOi' to 1000, inclusive, together with notes on the condition of 

 trees in the spring of 1007. 



