228 HORTICULTURE [Bot. Absts., Vol. V, 



1728. Cabrera, Teodoro. La utilidad de los guayabos. [Uses of the guava-trees.] 

 [Revist. Agric. Com. y Trab. 2: 628. 1919. 



1729. Call, L. E. Director's report. Kansas Agric. Exp. Sta. Ann. Rept. 1917-18. 68 p. 

 1918.— See Bot. Absts. 5, Entry 1466, 2024. 



1730. Calvino, Mario. ReseSo general sobre la arboricultura frutal de Mexico. [Fruit 

 trees of Mexico.] Rev. Agric. [Mexico] 5: 34-42. 6 fig. 1919. — Lists the fruits of Mexico both 

 for the tropical and the temperate belts, giving uses and possibilities of development of each. 

 Fruits belonging to the following genera are discussed: Crataegus, Carasus, Persea, Juglans, 

 Casimiroa, Diospyros, Lucuma, Citrus, Musa, Theobroma, Annona, Spondias, Carica, Achras, 

 Psidium, Chrysophyllum, Mangifera, Cocos, Cudonia, Phoenix, Vitis, and Olea. — John A. 

 Stevenson. 



1731. Condit, 1. J. Caprifigs and caprification. Univ. California Agric. Exp. Sta. Bull. 

 319: 341-375. 1920. — Figs which drop may be of the Smyrna class, the fruits of which require 

 caprification in order to set and remain on the tree; they may be of the caprifig class, the 

 fruits of which drop unless inhabited by the fig insect; or they may be common figs which 

 drop because of unsuitable climatic conditions. Varieties of caprifigs which consistently 

 bear quantities of polleniferous figs year after year, should be discarded, as they are of no 

 value in caprification. A list of commercially grown varieties is given. — A. R. C. Haas. 



1732. Ducomet, M. V. Par quel moyen peut-on assurer a 1'obtenir la propriety des vari- 

 etes nouvelles de plants cultivees. [How can the ownership of new varieties of cultivated plants 

 be assured to the owner.] Jour. Soc. Nation. Hortic. France 20: 120-121, 139-144, 173-177. 

 June, July and August, 1919. — -The writer calls attention to the fact that the originator of a 

 new and worthy plant is not protected in his rights in the same way that an inventor or writer 

 is. He thinks that a man who has spent years in developing a worthy plant should be pro- 

 tected by law so that no one else would be allowed to propagate and disseminate it without 

 paying a royalty to the originator. The writer recommends for France: — (1) That an asso- 

 ciation of French plant breeders be formed. — (2) That one or more government establish- 

 ments, open to the public, be instituted for the acceptance and preservation of new 

 varieties. — (3) That committees of acceptance and control be appointed. — (4) That every 

 request for entry be accompanied by a detailed description of the new variety; a supply of 

 seeds, bulbs, roots, buds or grafts; as exact an account as possible of the parentage of the 

 new form; and a promise to send periodically fresh supplies of seeds, roots, etc., and to 

 permit visits to the plantations in the event of controversy. — (5) That the request for 

 registration of the new variety be publicly announced.— (6) That in the case of annuals a 

 provisional certificate be given after one year and a final certificate after not less than two 

 years and that certificate in the case of perennials be granted in as short a time as the 

 nature of each permits. — (7) That the certificate guarantee only the authenticity of the 

 plants not their productivity or any other quality. — (8) That the certificate be revoked if the 

 variety prove unstable or is shown not to be a novelty.— (9) That during the period of 

 certification no sale of the variety be allowed without the authorization of the originator.' — 

 No recommendation is made as to the length of the period of protection for the originator. 

 — H. C. Thompson. 



1733. Ellenwood, C. W. Bearing habits of the Delicious apple. Monthly Bull. Ohio 

 Agric. Exp. Sta. 5: 27-28. 2 tables. 1920. 



1734. Enfer, V. L'ensachage des fruits. [Bagging fruits.] Rev. Hortic. 91: 294-295. 

 June, 1919. — The enclosing of fruits in sacks has long been practiced as a protection against 

 various insects and hail, and because fruits thus protected are improved in texture and size. 

 Sacks of a size appropriate to the fruit to be enclosed are chosen, the deformed and excess 

 fruits removed, and those remaining enclosed when they are the size of a small nut, or at least 

 by June 15 before the egg-laying period of the codling moth. Small holes are cut near the bot- 



