HORTTCtTLTUEE. 45 



roots. From the analyses so far made it appears that the amount of nitrogen in 

 the roots in the fall is increased by application of nitrate of soda. The increase 

 was greater where nitrate was used at the rate of 466 lbs. per acre than where 

 it was used at the rate of 311 lbs. per acre, but no further increase was noted 

 from a rate of 622 lbs. per acre. 



The tentative conclusion is advanced that asparagus growers may frequently 

 use nitrate of soda in excess of the most profitable quantity. 



Methods of storing' cabbage over "winter in Holland, J. Hayunga {Mitt. 

 Deut. Landw. Gesell., 26 (1911), No. 38, pp. 517-520, figs. 3).— The methods em- 

 ployed are given, together with an illustrated description of a cabbage storage 

 liouse. 



Compilation of analyses of f raits and garden crops, II. D. Haskins (Mas- 

 sachufiefts Sta. Rpt. 1910, pt. 1, pp. 32.'t-338). — This is a revision of a previous 

 compilation (E. S. R., IS, p. 241) to which has been added the analyses of a 

 number of cereals and hays. 



A complete handbook of fruit culture, E. Lucas (Vollstandigcs Eandhuch 

 der Obstkultur. Stuttgart, 1911, 5. ed. enl., pp. XII+598, figs. 386).— A hand- 

 book on fruit culture in Germany. Part 1 takes up the scientific principles in- 

 volved in fruit growing, part 2 discusses nursery practices, part 3 takes up the 

 details of growing fruit in the garden and orchard, part 4 discusses harvesting 

 and marketing, and part 5 deals with the pomology of German fruits. 



Apples and pears, G. Bunyakd (London and Edinburgh, [1911], pp. XI-\- 

 115, pis. 8, figs. 5). — A popular British treatise on the cultui'e of apples and 

 ]iears for the home and for the local market, including short selections of va- 

 rieties for various purposes. A number of varieties are illustrated in color. 



Garden and orchard (Field Expts. Harper-Adams Agr. Col., and Stafford- 

 shire and Shropshire, Rpt. 1910, p. 52). — The results of experiments conducted 

 by the Harper-Adams Agricultural College with several apple trees for a num- 

 ber of years are here summarized. They indicate that root and branch prun- 

 ing stimulate tree growth considerably, the effect being more marked on the 

 weakest growing variety tested. Cox's Orange Pippin. The most fruit buds 

 were formed on the unpruned trees. Cultivated trees have made more rapid 

 growth than those grown in grass. In 1907 the turf was removed from around 

 the stems of certain trees with a resulting increase in growth over trees grown 

 entirely in grass. 



Climatic adaptations of apple varieties, J. K. Shaw (MassacJiusetts Sta. 

 Rpt. 1910, pt. 1, pp. 111-2)5, pis. 3, figs. 13). — This paper is based on a study 

 carried on for the past 4 years relative to the effect of varying climatic con- 

 ditions on varieties. Many samples of different varieties grown under widely 

 varying conditions have been examined pomologically, and some of them 

 chemically, and a study made of the pomological and meteorological literature 

 available. 



The author groups the causes of the great differences in apple varieties 

 into the following classes: Cultural variations, soil variations, and climatic 

 variations. Particular attention is here given to temperature, which is con- 

 sidered the most ix)tent of the climatic factors and is discussed relative to its 

 influence on the form, size, and general development of varieties. North 

 America is divided into 7 apple belts which are named and illustrated and 

 the distribution and adaptation of several well-known varieties are discussed. 

 Tables are given showing the mean summer and optimum summer tempera- 

 tures for a large number of varieties. The chemical analyses are also 

 tabulated. 



Continued study has confirmed the author's previous deduction that the 

 variation in form of the Ben Davis apple grown in different localities is due 



