236 HORTICULTURE [Bot. Absts., Vol. V, 



1792. Anonymous. [Rev. of: Farrer, Reginald. The English rock-garden. 2 vol., 

 4<o, Ixiv, 504+viii, 524, 102 pi. T. C. & E. C. Jack: LondoD and Edinburgh.] Jour. Botany 

 57: 354-357. 1919. — The plants concerned are treated at considerable length in part from a 

 botanist's standpoint, and the nomenclature is discussed. — K. M. Wiegand. 



1793. B, D. Fougeres utiles. [Useful ferns.] Rev. Hortic. 91: 330-331. Aug., 1919 — 

 In addition to the specific mention of certain ferns enumerated by Prince Bonaparte (in: Notes 

 Pteridologiques, Fasc. VII, p. 19, October, 1918), several others of medicinal or decorative 

 value are listed. — E. J. Kraus. 



1794. Bellair, G. Comment economiser. Note sur le Verbena venosa. [Economic com- 

 ment. Note on Verbena venosa.] Rev. Hortic. 91: 387-388. Fig. 119. December, 1919.— 

 Although this plant was introduced from La Plata in 1830, it is still grown but little as an orna- 

 mental because of the uncertainty connected with the germination of the seeds. In order to 

 obviate this difficulty various methods of seed treatment were tested. Good results were 

 secured from the following methods: (1) Immersion in water at 100°C. for 60 seconds; (2) 

 immersion in water at 55°C. for 5 minutes; (3) immersion in a 2/1000 solution of nitrate of soda 

 for 48 hours; (4) immersion in a 2 1000 solution of sulfate of ammonia for 48 hours; (5) 

 stratification for 5 months. Poor results followed the following methods: (1) immersion in 

 water at 70°C. for 4 minutes ; (2) immersion in a 5 ' 1000 solution of sodium nitrate for 48 hours ; 

 (3) immersion in a 5/1000 dilution of wood ashes, (4) immersion for 48 hours in pure water, 

 though this latter result was fairly good. With the exception of the hot water treatments, the 

 seeds were bathed in the solution indicated, rather than immersed in them. The stratified 

 seeds, sown in March, germinated rapidly and completely. Seedlings may be carried over 

 winter or grown in the spring and planted out of doors from the middle to the end of May. — 

 E. J. Kraus. 



1795. Berthault, P. La reorganisation du Jardin d'Essais du Hamma. [The reorgani- 

 zation of the Experimental Garden at Hamma.] Rev. Hortic. 91: 292-294. Fig. 92-93. June, 

 1919. — The experimental garden established in 1832, was later (1867) taken over by the Algerian 

 Company with the three-fold view of making it a public park, a garden for scientific investi- 

 gations, and a center for the introduction of exotics as well as for the propagation and distri- 

 bution of indigenous plants. In 1913 the government again took possession of it and has 

 declared its intention of maintaining it for these same purposes. Much has already been 

 done in the way of removing the Garden from the state of neglect into which it had fallen, and 

 it is confidently expected that it will soon assume high rank as a laboratory for various phyto- 

 logical investigations. — E. J. Kraus. 



1796. Blot, F. Corbeilles de chrysan themes. [Beds of chrysanthemums.] Rev. Hortic. 

 91 : 355-356. Fig. 109. Oct. , 1919. — The chrysanthemum is preeminent among autumn flowers. 

 Many types, forms and colors are available. Cutting prepared during the early part of March 

 or the early part of April, or even the end of April for the varieties to be used as borders, should 

 be cut back several times during the summer in order to secure stocky, bushy plants. Some 

 of the single flowered varieties are especially desirable as budding plants. A classified list 

 of more than forty varieties is given. — E. J. Kraus. 



1797. Bois, D. La rose "Los Angeles." [The rose, "Los Angeles."] Rev. Hortic. 91: 

 296. 1 pi. (colored). June, 1919. — This rose, exhibited by Howard and Smith of Los Angeles, 

 California, at Bagatelle, where it received a gold medal, is the result of a cross between Lyon 

 Rose (Pernetiana) and Madame Segond-Weber (hybrid tea). It much resembles the former 

 in bud, flower, and color, and is said to be more hardy, more floriferous and less subject to 

 fungous diseases. — E. J. Kraus. 



1798. Bontrager, W. E. What shade and ornamental trees shall we plant? Monthly 

 Bull. Ohio Agric. Exp. Sta. 5 : 35-41. 5 pi. 1920. — A discussion is given of the relative merits 

 of types most suitable for lawn and shade planting, including those which will survive unfav- 



