640 EXPERIMENT STATION EECORD. 



medium-sized dent to whicli the name Pride of tbe North was usually given. 

 The only exceptions to this rule were the southern portions of New Jersey and 

 Pennsylvania, and the more northern portions of the New England States. 



How to grow one hundred bushels of corn per acre on worn soils, W. C. 

 Smith (Cincinnati, 1912, 2. ed., rev. and enl., pp. 1S8, pis. 2^). — This handbook 

 of information for corn growers is written with special reference to the restora- 

 tion of worn-out soil for corn production. 



Observations on certain extra Indian Asiatic cottons, H. M. Leake and R. 

 Pershad (Mem. Dept. Agi: India, Hot. Scr., J, {1912), No. 5, pp. 93-114, plsf. 

 7). — Botanical and other information on the cottons of Persia, China, and 

 Siam. 



The branching habits of Egyptian cotton, A. McLachlan ( U. 8. Dept. Agr., 

 Bur. Plant Indus. Bui. 249, pp. 28, pis. 3, fig. ly. — This bulletin presents results 

 of a study of the branching habits of Egyptian cotton conducted for the pur- 

 I)ose of developing a system of cultivation adapted to the irrigated districts of 

 southern California and Arizona. By means of especially devised diagrams 

 for recording the branching habits of the plant, the location of branches, the 

 development of fi-uiting branches, and the stature of plants are illustrated. 



It is pointed out that the Egypian cotton plant bears 2 kinds of branches, 

 long vegetative branches on the lower part of the stem bearing no flower buds 

 directly, and above these shorter fruiting branches, which bear flower buds. 

 The vegetative branches usually approximate the length of the main stem, bear 

 no flower buds except as they produce secondary fruiting branches, and, like 

 the axis, bear fruiting branches and may bear vegetative branches. The fruit- 

 ing branches, on the other hand, are about only one-third as long as the vegeta- 

 tive branches, bear a flower bud at each node opposite the leaf, and rarely bear 

 fruiting branches or vegetative branches. It is stated that from 6 to S large 

 vegetative branches are usually produced from the first 10 nodes of the axis, 

 and that at the next 2 or 3 nodes the buds frequently remain dormant or are 

 abortive, while above these a fruiting branch is produced at each node. 



The length and number of vegetative branches largely determine the stature 

 of the plant, and their control is necessary because of the desirability of small 

 plants in cultivating and harvesting. As a means of restricting the develop- 

 ment of branches early planting is advised. 



Abortion of early fruiting branches on both axis and large limbs was common 

 in a greater or less degree to all stocks grown from imported seed. It has been 

 found that the Arizona acclimatizetl plants frequently abort their lowest fruit- 

 ing branches. Some of the selected acclimatized tjiies of P^gyptian cotton, origi- 

 nated in the United States, bear fruiting branches at lower nodes on the stem 

 than the imported stocks. Of the 6 Egyptian varieties gi'own in Arizona in 

 1900 from imported seed, Nubari most nearly resembled the acclimatized stocks 

 in imtting out fruiting branches at comparatively low nodes. Topping young 

 ]tlants resulted in stimulating the growth of buds in the axils of cotyledons. 

 Branches just below the point where the plant was topped make an excessive 

 vegetative growth and tend to assume an upright position in place of the severed 

 axis. Egyptian cotton i)lants grown on soil containing considerable alkali 

 restrict the development of limbs and reject their early fruiting branches. 



Cotton improvement under weevil conditions, O. F. Cook ( U. S. Dept. Agr., 

 Farmers" Bui. 501, pp. 22). — This publication discusses various factors in their 

 bearing upon the profitable and progressive culture of cotton under weevil con-, 

 ditions. si)ecial attention being given to earliness in the variety and cultural 

 methods. It is pointed out that " the general object of all measures of control- 

 ling or resisting the boll weevil is to shorten the period . . . between the forma- 

 tion of flower buds and the growth of the bolls beyond the danger of weevil 



