NOTES AND ABSTRACTS. 



177 



indicates adulteration. Pure Paris Green will remain a clear green in 

 even the finest crystals. — A. A. K. 



Stems and Mechanical Compression. By L. H. Pennington 

 {Bot. Gaz. pp. 257-84, Oct. 1910; 2 figs.). — No increase in mechanical 

 strength or in amount or kind of mechanical tissue in any of the 

 stems used which were compressed longitudinally by light or heavy 

 weights.— G. F. S. E. 



Sterilization, Partial, of Glass-house Soils. By E. J. 



Eussell {Gard. Chron. p. 97, Feb. 17, 1912, and p. 113, Feb. 24; 

 4 figs.). — record of experiments- carried out at Eothamsted, which 

 show that it is advantageous to sterilize partially sick soil containing 

 manurial residues. — E. A. B. 



Stored Products, Papers on Insects affecting". By F. H. 



Chittenden, Sc.D. (U.S.A. Dep. Agr., Bur. Entoni., Bull. 96, pt. i. ; 

 March 1911; 2 figs.). — A list of insects affecting stored cereals, with 

 description and life-history of the Mexican grain beetle (Pharaxonotha 

 Kirschi) and the Siamese grain beetle (Lophocateras pusillus). 



V. G. J. 



Strawberries. By A. Janson (Oestr. Gart. Zeit. vol. vi. pt. ix. 

 pp. 335-42). — The best season for planting strawberries is between the 

 middle of July and the end of August. They like a well-worked soil, 

 and may succeed early potatos or peas. This crop should be enriched 

 by the addition of 220 lb. of basic slag to the acre and chalk' if neces- 

 sary. When this crop is harvested, stable manure is ploughed in, the 

 ground rolled, and 88 lb. of sulphate; of potash scattered over the 

 ground. A fortnight later 40 lb. of sulphate of ammonia are added. 

 Chile saltpetre must not be used instead of ' the ammonia salt. Not 

 more than five or six varieties should be grown. The following sorts 

 give a good succession : — 



(a) * Deutsch Evern,' ' Konig Albert von Sachsen,' * Belle 

 AUianoe,' ' Kriegsminster von Boon,' ' Marguerite.' 



(b) ' Sieger,' ' Laxton's Noble,' ' Dr. Hogg.' 



* Deutsch Evern ' is susceptible to mildew, * Konig Albert von 

 Sachsen ' is not good on a very dry soil. The best sort for preserving 

 IS ' Jucunda. ' After the fourth crop the plants should be destroyed. 

 Every autumn long stable manure is spread between the rows and 

 drawn slightly over the plants; in spring this is dug in, and the plants 

 protected by brushwood. When the plants begin to flower the ground 

 IS well soaked with water. As soon as the fruit begins to ripen no more 

 water is given. After the crop is gathered, the ground is hoed, a little 

 later the runners are cut off. About 1| cwt. to the acre of super- 

 pliosphate is hoed in, and a fortnight later the same, quantity of 

 sulphate of ammonia; two weeks later nearly 2| cwt. of kainit are 

 added.— ^. E. W. 



Strawberries, Newer Varieties of, and Cultural Directions. 



By 0. M. Taylor (U.S.A. Exp. Stn., New York, Bull. 336; April 1911 ; 



VOL. XXXVIII. N 



