ABSTRACTS. 



549 



Fruit-trees, Pollination of. V>y J. J. Willis {Gard. Mag, 2,508, * 

 p. 674 ; 19/10 1901). — The writer describes the various causes of the 

 failure in the setting of hardy fruit-blossoms. Some of the causes of 

 sterility may be remedied by cultivation, but where atmospheric conditions 

 are the cause the^e is no remedy in orchard culture. The article should 

 be perused by those engaged or interested in fruii-culture. — W. G. 



Fruit-trees, Proposed Register of. I>y P. J. Cillie {A(jr. Jour. 

 Cape G.IL vol. xviii. No. IH, pp. 870 879, June 1901).— The author 

 gives statistics " based on practical experience, showing what varieties of 

 fruit-trees are or are not suited to the various fruit-growing districts of 

 the Colony."— i?. N. 



Fruit-tree Tortrix (Penthijia cariegana, Hiibn.) (Gard. Chron. 

 No. 753, p. 842; fig. 120; l/Oy 1891).— Only lately recorded in this 

 <;ountry as a pest on various fruit-trees. The life-history and a descrip- 

 tion of the insect are given. The caterpillars feed on the upper surfaces 

 of the leaves, leaving a network of veins. Spraying with " Paris green " 

 is recommended as the best remedy. — G. S. S. 



Fung'i, Berkeley's Types of, redescribed. By G. Massee (Jour. 

 Linn. Soc. vol. xxxv. pp. 90 119, pi. 4 and 5). — This paper is a continua- 

 tion of the work commenced in vol. xxxv. p. 862, and includes the species 

 of Discomycetes and Hystariacea, of which type specimens exist at 

 present in the Kew Herbarium. — G. S. S. 



Fungi, Germination of Spores of. By B. M. Duggar (Bot. Gaz. 

 vol. xxxi. p. 38 ; No. 1). — A physiological study. Treats of the per- 

 centage of germination ; the influence of certain physical stimuli ; the 

 efi'ects of temperature and oxygen supply ; the inhibition of germination 

 in nutrient solutions ; the resting spores and drying-out of spores ; sub- 

 mergence of spores ; some peculiarities of germination ; dihition of food- 

 materials &c. — G. H. 



Fungi, Mexican. By E. W. D. Holway (r^ot. Gaz. vol. xxxi. p. 826, 

 No. 5). — Seven species of U'ro7yi2/<^'<3.s, eighteen of Puccinia, one C7re<io, and 

 one liavenelia, one Endophyllum, one Stichospora, and three Coleosjjorkim 

 are described. — G. H. 



Fungi, Sapropliytic, and Salts of Nitrogen. By Miss M. H. 

 Smith {Bot. Gaz. vol. xxxi. p. 126 ; No. 2). — Proved by experimental 

 cultures that such fungi as Aspergillus flavus and Botrytis rulgaris 

 flourished when supplied with either potassium nitrite or nitrate ; the 

 former fungus bore well-formed fruit. — G. H. 



Fungicides. Prize for Copper. Anon. {Jour. Bd. Agr. vol. viii. 

 No. 1, pp. 99, 100, June 1901).^ — Notification regarding an international 

 competition to be held under the auspices of the Federation of the Agricul- 

 tural Unions of Italy for a prize of £40, which will be awarded to the person 

 who discovers and makes public the best method for obtaining exact and 

 constant results in the determination of the fineness of the flowers of 

 sulphur, and of mixtures of sulphur, and copper sulphate. Comi)etitors 

 to send in their papers in a sealed envelope before March 1, 1902, addressed 



