NOTES AND ABSTRACTS. 



293 



Saxifraga Griesbaehii. By E. Jenkins (Gard. Chron. No. 843, p. 

 123, fig. 53 ; Feb. 21, 1903). — This new Saxifrage is a native of Turkey, and 

 was found in Albania and Macedonia at an elevation between 4,000 and 5,000 

 feet. Among the chief points of interest and beauty is the purplish-crimson 

 colour of the miniature blossoms. From quite an early stage a purplish-red 

 tint is visible in the inflorescence, even before it emerges from the 

 crustaceous rosette. The peduncles are about 4 ins. long. — G. S. S. 



Saxifrag-a ligulata. By R. Dean (Journ. Hort. Feb. 26, 1903, 

 p. 184). — This is recommended for cultivation in suitable situations on 

 account of its early and neat habit. — G. W. D. 



Scab of Apples and Pears, and Remedies. By Dr. Friedrich 

 Kriiger (Gartenflora, p. 602, figs. 124, 125, and 134 ; 13/11/02).— One of 

 the commonest and most troublesome diseases of Apples and Pears is 

 scab, due to two very closely related species of Fusicladium, viz. 

 F. dendriticum (Wallr.), Fckl., on Apples, and F. virinum (Lib.), Fckl., 

 on Pears. 



On the fruits the fungi produce the well-known rounded scabs or 

 specks, which are at first blackish green ; later the flecks become dark at the 

 edges and corky in the middle. On the leaves are sooty patches, which in 

 the Pear are chiefly on the underside, while in the Apple they are mostly 

 met with on the upper surfaces. The young shoots are also damaged by 

 the fungi, more particularly those of the Pear. 



The following methods of prevention and remedies are suggested : 



(1) Choice of resistent varieties. Some varieties are more easily 

 attacked by the fungus than others. 



(2) Good cultivation and adequate manuring of the trees should be 

 practised. 



(3) All infected "scabby " young shoots should be cut off and burnt, 

 and dead fallen leaves on which the fungus is present should be collected 

 and burnt also. 



(4) Spraying with a 2 per cent. Bordeaux mixture just before the leaf- 

 buds open in spring and again when the fruit is set. — J. P. 



School Gardens. By F. M. Powell (U.S.A. Hort. Soc. Minnesota, 

 Bep. 1902). — Advocates the introduction of "School Gardens" in all 

 schools, gives some account of the history of school gardening, and 

 suggests a plan to be carried out. — F. J. C. 



Seed-dispersal Of a Grass. By M. Nieuwenhuis-Uexkiil (Ann. 

 Jard. Bot. Buit. Ser. II. vol. hi. 1902, pp. 114-121 ; 2 plates).— A descrip- 

 tion of the modification of the axis of the spike of a grass (Thuarea 

 sarmentosa) to secure dispersal of the fruit by prolonged flotation in sea- 

 water. — P. G. 



Seeds, Old, Advantages of sowing in certain cases. By 



Jules Rudolph (Rev. Hort. March 1, 1903, p. 207). — Advantageous 

 especially with Vegetables and Melons, retarding running to seed and 

 improving root-formation. — C. T. D. 



