256 JOURNAL OF THE ROVAL HORTICULTURAL SOCIETY. 



native barks which appear to be most in demand. To the Latin name 

 of each are added synonyms and the pharmacopoeial name, if any, the 

 common name or names, its habitat, range, a description of the tree or 

 shrub, as well as of the bark itself as found in commerce, and informa- 

 tion concerning collection, uses, and prices : a warning being added 

 that these last are only meant to give collectors an idea of the range 

 of prices, which are, of course, subject to the fluctuations of the 

 drug market. An illustration is given in the case of most of the species. 



M. L. H. 



Mexican and Central American Plants. By J. N. Bose {Contr. 



jr. U.S.A. Herb. xii. (1909); pt. 7; figs.).— The results of a botanical 

 journey into Mexico are here described, many new species including 

 Aquilegia viadrensis from Sierra Madre, four new species of Ceanothus 

 (including one, C. Candolleanus, which is thought to be the C. azureus 

 of De Oandolle's Prodromus [2: 31, 1825]), six new Cupheas, some 

 with fair-sized flowers, several new Cacti, and a large number of 

 Lopezias. Plates of Beaucarnea Goldmanii, Echinocactus Palmeri, 

 Opuntia azurea, 0. Lloijdii, and 0. vilis, accompany the text. — F. J. G. 



Moisture Content and Shrinkagre in Grain. By J. W. T. 



Duvel {U.S.A. Dep. Agr. Bur. PI. Ind., Circ. 32, July 1909.)— A 

 series of tables showing loss or shrinkage in weight compared with 

 reduction in percentage of moisture, resulting from the drying of grain, 

 the difference between them depending on the quantity of water originally 

 contained in the grain, and the extent to which the drying is carried. 

 This is a fruitful source of trouble between grain merchants and 

 operators of elevators, or commercial grain driers. — C. H. L. 



Narcissus Engelhearti. By J. Sangster {Garden, Sept. 4, 1909, 

 p. 430). — The Rev. J. Jacob, having asked for the experience of 

 growers as to the vigour of this section of Narcissus, his experience with 

 them having been unfavourable (Garden, Aug. 21, p. 410), the writer 

 states that he has found ' Gold Eye ' to be a poor doer, ' Egret ' better, 

 but by no means robust, and ' Moira ' " miffy." With these exceptions 

 he considers the group to be satisfactory. ' Incognita,' ' Cresset,' and 

 * Mars ' are specially mentioned as robust. 



F. H. Chapman also finds * Gold Eye ' an exception to the other- 

 wise satisfactory charact-er of the group. — H. R. D. 



New Plants. By J. N. Eose {Contr. jr. U.S.A. Herh. xii. (1909); 

 pt. 9; plates). — The following new plants are figured and described: 

 Pereskia autumnalis (Pvose), a tree up to 30 feet tall from Guatemala; 

 Oyuntia Blakeana, and descriptions of 0. arizonica and 0. Toumeyi 

 from Arizona; Echinocactus Baileyi, with large, light purple flowers 

 with yellow stamens from Oklahoma; Nopalea lutea from Guatemala 

 (aU Cactaceae) ; Conzatta arborea, a shrub with small yellow flowers 

 in slender racemes and large leaves from Mexico. — F. J. C. 



