236 EXPEEIMENT STATION EECOED. 



prove of use in breeding new types of liardy citrus fruits. A number of liybrids 

 have recently been made by the author between the finger lime and the common 

 lime (C aurantifolia). 



Experiments on the manuring of tea seedlings, P. H. Carpenter and E. A. 

 Andrews {Indian Tea Assoc, Sci. Dept. Quart. Jour., No. 4 (lOl-i), pp. 117- 

 IJfS). — This article describes the results of some preliminary experiments in the 

 manuring of tea nurseries which were carried out during the year 1913 at the 

 Tocklai Experiment Station with the object of testing the value of organic and 

 inorganic manures for the development of tea seedlings. 



Some abnormalities of the coconut palm, T. Fetch (Ann. Roy. Bat. Gdrd., 

 Peradcniya, 6 (.1015), No. 1, pp. 21-30). — In these notes the author describes a 

 number of abnormalities which are of more or less common occurrence among 

 coconut palms and fruit. 



"Walnut mutant investigations, E. B. Babcock (Pi'oc. Nat. Acad. Sci., 1 

 (I'Jlo), No. 10, pp. 535-537). — A discussion of the walnut mutant {Juglans cali- 

 fornica qiiercina) previously noted (E. S. R., 32, p. 33S) with special reference 

 to the character of mutation. 



The author finds in part that the mutation takes place in female flowers only 

 and appears in the first generation after the mutation occurs, but upon crossing 

 the species type it is completely recessive in the Fi generation. The nature of 

 the mutation is such that only certain genetic factors are affected without hav- 

 ing the chromosome number disturbed. 



Walnut culture in Arizona, J. J. Thobnbeb (Arizona Sta. Bui. 76 (1915), 

 pp. JfGO-503, pis. 2, figs. 9). — In this bulletin the author describes the work of 

 C. R. Biederman and R. A. Smith, sr., in grafting French and English walnuts 

 upon Arizona stock. Consideration is given to miscellaneous trials in growing 

 walnuts in Arizona. The Arizona walnut (Juglans major) is describetl with 

 reference to its range, growth, and value as a stock for English and French 

 nuts. Notes are given on growing walnuts in California, together with sug- 

 gestions for walnut growing in Arizona. 



The methods of propagation employed by C. R. Biederman, and here described 

 in detail, consist of bark grafting and splice grafting. As high as 90 per cent of 

 live grafts have been secured and with successful manipulation grafting is 

 accomplished during most of the growing season. The important features of 

 these methods of grafting as employed by Biederman are the exposing of a 

 relatively large cambium surface on the scions so as to insure contact at many 

 points with the cambium surface of the stock, the hollowing out of some of the 

 pith and wood of the scarf or diagonal cut of the scion to prevent this from 

 swelling and pushing the cambium surfaces apart, and also to enable the cam- 

 bium surfaces of scions and stock to He closely together. Special tools are 

 employed such as a thin-curved steel bark separator for separating the cambium 

 from the wood of the stock, a small knife-shaped gouge for hollowing out the 

 wood and pith, and a small plane for fitting the surfaces closely together. 

 Extreme care is used in selecting and storing scions, sanitary methods are used 

 throughout, and all cut surfaces are v\-axed to prevent drying out. 



The method of grafting employed by R. A. Smith, sr., consists of cleft graft- 

 ing below the surface of the ground at the point of the somewhat enlarged root, 

 fine moist dirt being drawn closely against the base of the tree so as to cover up 

 both stock and scion. 



The cultivation of medicinal plants, F. B. Kilmer (Amcr. Jour. Pharm.. 

 87 (1915), Nos. 8, pp. 843-359; 9, pp. ^21-435).— A review of the present status 

 of the drug plant industry. Including a bibliography of literature on drug 

 culture. 



