742 EXPEEIMENT STATION RECOED. 



Horticultural information {Ohio Sta. Cue. 12^, pp. IJiS-Up). — This circular 

 comprises a guide to the accessible sources of information relative to various 

 phases of horticultural practice. Attention is called to the publications of the 

 state and government institutions and a list is given of books, bulletins, and 

 periodicals dealing with horticultural subjects. 



Vegetable growing in Alabama, P. F. -Williams and H. M. Conolly {Ala- 

 bama Col. Sta. Circ. l.'i, pt. 2, pp. 59-83, figs. 2).— Part 1 of this circular (E. S. 

 R., 26, p. 740) discussed in detail commercial vegetable growing in Alabama. 

 The present part contains popular directions for growing the more important 

 vegetables in the home garden. Notes are given relative*to storage, home can- 

 ning, and some common insects and diseases of the garden. 



A planting table adapted to Alabama conditions is appended. 



The Fi heredity of size, shape, and number in tomato fruits, B. H. A. 

 Groth {New Jersey Stas. Bui. 2^2, pp. 3-39, pis. 8, figs. 8). — In continuation of 

 a series of studies previously reported (E. S. E., 25, p. 828) this bulletin de- 

 scribes the inheritance, in the first generation of crosses, of macroscopical and 

 microscoi^ical structures in a number of types of tomatoes. Heredity of size 

 and shape of fruit, number of locules in the fruit, size of the epidermis of fruit 

 cells, and thickness of the radial wall of the epidermis in fruits are shown in 

 a series of charts and discussed at length. 



The principal deductions derived from the work are summarized as follows : 



" Fruits of tomato types may possess latent factors for size and shape dif- 

 ferent from those they exhibit. Either the factors for the actual size and 

 shape or the latent factors may be active in a cross to determine the size and 

 shape of the Fi fruits. 



" The size and shape of the Fi fruits are the geometric means between the 

 size and shape corresponding to those factors of the parents, which were active 

 in crossing. 



"Fruits of tomato types may carry a factor for two locules; or a factor for 

 two locules and another for addition cells ; or a factor for two locules, another 

 for addition cells, and a third for a broken center. 



" When types possessing a factor for addition cells are crossed with two-celled 

 types or with each other, the differences between the number of locules of the 

 ci'oss and those of the two parents separately bear to each other the same ratio 

 as the differences between the surface area of the equatorial section of the 

 F, fruit and the respective areas of the two i>arents separately bear to each 

 other. 



" In crosses of types possessing factors for a broken center with other types, 

 the inheritance of cell number in the Fi fruit is similar, except that another 

 factor for cell number, a function of the respective factor for broken center, 

 becomes active in determining the cell number of the cross. 



" In the Fi fruits of types ix>ssessing factors for broken centers with each 

 other, the factor for the lower cell number seems to be dominant. (Five in- 

 stances only.) 



" The Fi heredity of size, shape, and number in cell structures of the fruit gkin 

 is influenced by other unknown factors besides the factors for size, shape, and 

 number apparent in the parents. 



" Reciprocal and duplicate crosses usually agree in the inheritance of all 

 characters studied: but they may differ greatly. Even fruits borne by plants 

 raised from the seed of one fruit pollinated by pollen from a single flower may 

 differ radically in characters of size, shape, and number. 



" When crossing the rough ' Peaches ' with smooth types, partial Xenia may 

 occur." 



