140 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



Blackberry, The Himalaya. By H. P. Gould [U.S.A. Dep. 

 Agr., Bur, PI. Ind., Circ. 116 ; March 1913 ; pp. 23-26). — The exact 

 botanical identity of this blackberry appears not to have been deter- 

 mined. The canes are perennial and do not die back each year after 

 the fruiting period. Reports are given from a number of growers 

 who have tried it, and only one represents it as successful. In most 

 places it seems to be deficient in hardiness, productiveness, and 

 quality. — A. P. 



Blueberry Culture. By F. V. Coville {U.S.A. Dep. Agr., Bur. 

 PI. Ind., Circ. 122; April 1913 ; pp. 3-11). — Vaccinium corymbosum 

 is the species chiefly desirable for cultivation, which, though 

 known as the swamp blueberry, does not thrive in a permanently 

 wet soil. Directions are given for propagation by a layering process 

 known as " stumping," and by tubering. Success in blueberry culture 

 depends especially on the satisfying of two requirements— an acid soil, 

 and a root fungus that appears to have the beneficial function of 

 supplying the plant with nitrogen. This subject is discussed at 

 length in Bulletin 193 of 1911 — "Experiments in Blueberry Culture." 

 Only a beginning has been made in the improvement of the fruit, 

 but berries eleven-sixteenths of an inch in diameter have already 

 been produced, and it is expected that from the better wild stocks 

 now available berries of still larger size will be developed. — A. P. 



Bulb-growing, Experiments in the United States Bulb Garden, 



By P. H. Dorsett {U.S.A. Dep. Agr., Bull. 28; Nov. 1913 ; 

 figs.). — Instructions on and results of experiments in the growing 

 of hyacinths, narcissi, and tulips. About one million dollars' worth 

 of Dutch bulbs is imported into the United States annually, and 

 endeavours are being made to devise successful methods of growing 

 these in the States. — F. J. C. 



Caladenias. By R. Schlechter {Orchis, vol. viii. pt. i. pp. 3-8 ; 

 I col. plate). — Some thirty varieties of Caladenia are found in Australia. 

 The difficulty of their cultivation has been over-rated. Plant the 

 bulbs in rather deep seed-pans containing a mixtrue of leaf-mould, 

 sand, and a little loam, adding the soil in which they were packed. 

 Water sparingly in spring and more abundantly in summer. Grow 

 in a cool house. Caladenia alba bears one to three flowers. The 

 narrow pointed sepals and petals are white. C. carnea differs from 

 the above in the rose colour of the sepals and petals. C. aphylla 

 bears a white flower suffused with violet before the leaves appear. 

 C. coerulea has blue flowers. C. deformis resembles the preceding, 

 but is slightly hairy and the flowers are larger. C. discoidea has a 

 hairy stem with greenish-yellow petals suftused with brownish-red; 

 C. filamentosa, thin hairy leaves with brown flower ; C. flava, golden- 

 yellow flowers with purple spots. C. hirta has a tall stem with two 

 or three white or pink flowers ; C. gemmata, oval hairy leaves, blue 

 flowers ; C. latifolia, hairy lance-shaped leaves, long stem with two 



