l8o JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY, 



from the long arching growths. The fruits are about three-quarters of 

 an inch long, subglobose or urceolate. R. sertata will make a nice 

 Rose for hedges, being well furnished to the base. — H. R. D. 



Roses Climbing under Glass. By Jos. Paehnck {Rev. de VHort. 

 Belg. June 30, 1913). — Some hints to the amateur on the planting 

 and management of roses under glass. These are said to do much 

 better if they are trained, not on the back wall of the house but 

 under the glass like vines, only in this case there must be a space 

 between them and the roof or the buds will be liable to rot. Directions 

 on pruning are given, and the relative value of six or seven varieties 

 is discussed. These varieties include ' Marechal Niel,' ' Gloire de 

 Dijon,' ' Reve d'Or,' ' Comtesse de Bouchaud,' ' Mme. A. Carriere,' 

 * La France de 1789,' ' Triomphe des Noisettes.* Of these the first 

 two are treated of as indispensable, and ' La France ' and ' Triomphe 

 des M oisettes ' are mentioned as the most thoroughly satisfactory in 

 the writer's opinion. — M. L. H. 



Roses, New {Gartenflora, vol. Ixiii. pt. v. p. 116). — 'Papa Hemeray,' 

 a hybrid of Hiawatha and the Bengal rose, is a robust grower, bearing 

 brilliant blood-red single flowers with white centres. The Polyantha 

 Rose ' Le Ponceau ' (' Gruss an Teplitz ' X ' Mme. Norbert Levavasseur') 

 is a robust grower, resisting mildew. Its flowers are beautiful coral- 

 red in colour, and the foliage is very attractive. — 5. E. W, 



Salvia splendens * Bouquet Rose ' (Rev. de VHort. Belg. Feb. 

 15, 1913, p. 43). — ^This new Salvia, of a colour hitherto unknown 

 among Salvias, has proved to come true from seed, and is a valuable 

 acquisition. — M. L. H. 



Sand-dunes and their Flora. By J. Jesuret {Beih. Bot. Cent. 

 XXX. Abt. 2, Heft 3, pp. 269-391 ] 3 pi. and 9 figs.).— This paper, on 

 the history of the development of the flora of the dunes of Holland, 

 contains a whole series of observations on the soil, meteorology, 

 water-supply, and the effect of dew, wind, and sunshine on the growth 

 and habit of dune plants. There are also meteorological observations 

 of great interest to botanists, and observations on the effect of a covering 

 of sand, of dead vegetable matter, as well as on the growth and habit 

 of bracken. Some of these might be of importance to horticulturists. 



The author finds that in post-glacial and historic times there 

 have been two wet and three dry chmatic periods. 



The formation of the older dunes dates back to the prehistoric 

 period. In the second dry period they extended both westward and 

 to the east. In the following wet period (600 a.d.) they were over- 

 grown by forests of Scots Pine, Oak, Alder, &c. At this time the sea 

 invaded Holland, and many of the dunes were destroyed. 



About 1 100 A.D. another dry period began. The Spruce was able 

 to invade part of this area. Later the new series of dunes began to 

 develop. 



