HOETICULTUKE. 39 



Experiments on tlie gases given off by bananas and oranges respectively 

 were also carried on in tlie laboratory. It was sliown that oranges gave off a 

 good deal of carbonic-acid gas when stored in a close place such as a ship's 

 hold, but although this gas appeared to be a good preservative of bananas, it 

 was found by direct trial that the emanations from oranges stored in a chamber 

 brought about a premature ripening of bananas. As a result it is recom- 

 mended that citrus fruits and bananas be placed in separate storage when being 

 shipped for long distances by sea. 



In the light of the results secured with the Para rubber tree, it is concluded 

 that it is not suitable for cultivation in Jamaica as a commercial source of rub- 

 ber. The high cost of labor is one of the important factors against its culture. 

 Castilloa elastica appears to be the most promising rubber tree at present being 

 tested in Jamaica. It has a more vigorous growth and capacity for giving its 

 latex at a few tappings, thereby reducing the cost of collecting the rubber. 



Mushrooms, R. L. Castle (London, [1910], 1. ed., pp. VI+20+XII, figs. 

 28).— This booklet contains popular directions for growing mushrooms. 



Growing' tomatoes for the canning factory, J. Troop, C. G. Woodbury, and 

 J. G. Boyle (Indiana Sta. Bui. lU, pp. 511-528, figs. 8).— Under the general 

 headings of soil, growing the plants, harvesting, yields and profits, varieties, 

 insects, and diseases, this bulletin discusses the methods now employed in 

 Indiana in growing tomatoes as a field crop for the canning factory, the business 

 being considered from the standpoint of the general farmer. The subject 

 matter is based upon field investigations conducted by the station, observations 

 made in important growing sections, and information furnished by canners and 

 growers. 



The investigations as a whole have led to the following suggestions for placing 

 the industry on a better paying basis: The growing and setting out of better 

 plants; more thorough soil preparation, including drainage, fertilizing and cul- 

 tivation ; handling the vines more carefully during the picking season ; and 

 planting smaller areas with more intensive methods of culture. 



Commercial fruit growing, A. Janson (Der Grossobstbau. Berlin, 1909, pp. 

 VI-\-313, figs. 132). — This work is presented as a guide and text-book of 

 orchard management, including intercropping with small fruits and vegetables. 

 It is especially designed for those who already have a technical knowledge of 

 fruit culture and wish to engage in commercial orcharding. For this reason 

 questions relating to locating the orchard, orchard policy, valuation, financing, 

 determination of yields, etc., are given more importance than cultural details. 

 although many phases of the cultural work are treated with a view to supple- 

 menting information furnished in previous works on fruit growing. 



Fruit production in the Department of Rhone, Deville (Ann. Soc. Agr. Sci. 

 et Indus. Lyon, 1909, pp. 101-123).— In addition to a brief survey of the fruit 

 industry of Rhone, the questions of fertilizing, training, pruning, and thinning 

 fruit trees are discussed, as well as the control of insects and fungus diseases 

 attacking various kinds of fruits. 



Fruit growing in Auvergne, D. Laye (Assoc. Frang. Avanc. Sci., Compt. 

 Rend., 37 (1908), pp. 1127-1137).— A general account of the fruit industry in 

 the Department of Puy de Dome, France. 



The planting of fruit trees (West Indian Bui, 11 (1910), 'So. 1, pp. 50-55, 

 pis. 3).— In view of the successful results secured by Bedford and Pickering 

 in planting fruit trees without taking any precautions to prevent the roots from 

 being injured and then ramming the soil tightly around them (E. S. R., 20, 

 p. 1034) experiments were undertaken at several of the stations in the West 

 Indies to determine the effect of this unorthodox method of planting in those 

 67374°— No. 1—11 4 



