HOKTICULTUKE. 41 



following as a whole Mendeliau numerical relations in subsequent generations. 

 Certain white beans crossed with self-colored ones produced mottled offspring 

 in the first generation of hybrids, and mottled, self, and white individuals in 

 the second generation of hybrids. Other white beans similarly crossed gave 

 only self-colored fir^t generation hybrid seeds, which fact the writer points 

 out as an indication but not proof that mottling may be latent in some white 

 beans and not in others. In the tests here reported crosses of various self- 

 colored races gave only self-colored offspring. 



The paper concludes wih a discussion of the theories regarding mottling, 

 relation of mottling to color hypostasis, and the relation of color hypostasis to 

 albinism. 



The importance of uniformity of varietal character in vegetable seeds, 

 W. W. Tracy (Market Growers' Jour., 5 (1909), No. 18, pp. 2-Ji). — In this paper 

 the author calls attention to the importance of using seed which will develop 

 into plants of identical varietal character, points out some of the difficulties 

 which arise in selecting such seed, and outlines methods for carrying on seed 

 selection. 



Manurial experiments in onion cultivation, L. Jeevis (Bui. Dcpt. Agr. 

 Bahamas, 4 (1909), No. 3, pp. 88-91). — Data are given of some demonstration 

 experiments with onion fertilizers, commenced at the station in 1908. 



Winter onions in the Southwest, E. L. Crane and R. H. Forbes (Arisona 

 Sta. Bui. 60, pp. Ji-ol-'too). — A popular account of onion culture in southern 

 Arizona discussing soils, arrangement of ground, methods of planting, irriga- 

 tion and cultivation, insect pests and diseases, varieties, harvesting and market- 

 ing, costs, yield and profit. 



Report of the horticulturist, J. E. Higgins (Hanaii Sta. Rpt. 1908, pp. 4"2-o0, 

 pis. 2).— The fruit shipping investigatons were continued as the chief work of 

 the year. As a result of the experiments conducted in 1907 and previously 

 noted (E. S. R., 20, p. 538), commercial shipments of pineapples were made to 

 Denver and Chicago during the following year. The station tested .3 promising 

 orchard cover crops, of which the cowpea makes the quickest and most 

 luxuriant growth but is quite susceptible to the attacks of aphis. The pigeon 

 pea required a much longer time to come to maturity and is difficult to plow 

 under when full grown. The jack bean, a plant of lower growth and less ram- 

 bling habit than the cowpea, makes a good cover and is quite free from insects. 

 Such orchard insects as scales, mealy bugs, and aphis were held in check by 

 using kerosene emulsion and by the use of a sticky mixture to keep ants from 

 the trees. 



Different stocks are being tested in the citrus orchard, including the rough 

 lemon, shaddock, sweet orange, and pomelo, and which in vigor of growth cor- 

 respond to the order named above, the rough lemon making a very strong 

 growth and far excelling all the other stocks. A list is given of 43 varieties of 

 bananas now growing on the station grounds. 



Experiments were made in the budding of mangoes. Of the Alphonse buds 

 80 per cent have grown, but the results with some other varieties are less favor- 

 able. It appears that the mango has more than one season of active growth. 

 Budding to be successful must be done in the early part of these active growth 

 periods. Experiments in transplanting 2 or .3-year-old mangoes seemed to jus- 

 tify the handling of the mango as a nursery tree. Inarching, although more 

 expensive than budding, appears to be the surest means of propagating fine 

 varieties of mangoes. Shipments of young trees by mail from the Bureau of 

 Plant Industry of this Department to the station indicate that only trees with 

 firm wood and a dormant terminal bud can be successfully shipped by this 

 18556—10 4 



