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JOUBNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



light rich soils are essential, and they cannot be well done without skilled 

 attention. — C. W. D. 



Palms : On the Sowing* of Seeds. By D. Gauthier (Rev. Hon. 

 pp. 116, 117 ; March 1, 1902). — Directions for sowing various species and 

 their subsequent treatment. — C. T. D. 



Parasitic Flowering' Plant. Rhopalocnemis phalloides, 

 Jung*h. A morphological-systematical (sic) study. By J. P. Lotsy 

 (Ann. Jard. Bot. Buit. vol. xvii. p. 73 ; 12 plates ; 1900). — An account of 

 the histology and morphology of the flowers of this balanophoraceous 

 plant, and an emended description of the plant. — P. G. 



Paris Green Analysis. By L. L. Van Slyke and W. H. Andrews 

 (U.S.A. Exp. Stn., New York, Bull. 204; 12/1901).— The presence of 

 water-soluble compounds of arsenic in Paris green is seriously objection- 

 able owing to the fact that soluble arsenic compounds injure foliage. 

 The standard suggested in America is, " It shall not contain arsenic in 

 water-soluble forms equivalent to more than Sh per cent, of arsenious 

 oxide." The other substances estimated were total arsenious oxide, 

 copper oxide, and arsenious oxide in combination with copper. The 

 general result of the analysis showed a very good quality on the American 

 markets, the average, water-soluble arsenious oxide being only 1*28 per 

 cent, and the arsenious oxide in combination with copper 55*98 per cent. 



F. J. C. 



Passiflora ambigua. By Sir J. D. Hooker (Bot. Mag. tab. 7822). 

 Nat. ord. Passiflorece, tribe Passiflorece. Native of Nicaragua. It 

 flowered at Kew in May 1901. It may possibly be a hybrid. The 

 flowers are 5 inches in diameter. The sepals are pale pink and the 

 petals white dotted with rose-purple. Corona is nearly 2 inches long, 

 red banded with white, the filaments being violet. — G. H. 



Paths, Garden (Garden, No. 1588, p. 265 ; 26/4/1902).— It is seldom 

 that one does not see something connected with garden paths that is open 

 to criticism. The proper width of paths with regard to position and sur- 

 roundings, their drainage, flagged paths, &c, are described and suggestions 

 made in connection therewith. — E, T. C. 



Pea, The Sweet. By R. Dean (Garden, Nos. 1580 and 1581, 

 pp. 150, 159). — The history of the Sweet Pea from 1817, when the first 

 striped variety appeared, and on the raising and introduction of new 

 varieties. The garden culture of the Sweet Pea is also detailed, such 

 items as sowing, watering, Sec, receiving special attention. A selection of 

 twelve of the very best varieties is given. — E. T. C. 



Peach Culture. By R. Morrill (U.S.A. Hort. Soc. Illinois, 1901, 

 pp. 93-108). — An interesting paper on this subject, chiefly from a com- 

 mercial grower's standpoint. The author emphasises the fact that a 

 proper balance must be kept between root and top of tree. A Peach tree 

 has n tendency to grow more top and produce more blossoms and Peaches 



