NOTES AND ABSTRACTS. 



249 



Guava Jelly. By J. Belling {U.S.A. Exp. Stn. Florida, Bept. 

 1908; pp. 105-109). — Experiments were carried out as to the best 

 method of making guava jelly. A recipe for its making (for which the 

 original should be consulted) is given. — F. J. C. 



Grypsy and Brown Tail Moths. By \Vm. Stuart {U.S.A. Exp. 



Stn. Vermont, Circ. 2; Mar. 1909; %s.). — These two troublesome 

 European insects have spread to all the New England States except 

 Vermont. They are figured and methods of dealing with them are 

 detailed. See previous abstracts. — F. J. C. 



Hyacinths, Propagation of. By Piet Ammerlaau {Gard. Mag. 

 No. 2916, September 18, 1909; figs.). — Four very clear and interest- 

 ing illustrations explain two systems by which one hyacinth bulb is 

 made to produce bulblets to the number of sixty or even eighty in one 

 season. The bulblets have, of course, to be grown on to flowering size, 

 but the method of reproduction is simple and very rapid. — E. B. 



Hydrocyanic Acid in Green Plants, Role of. Part III. 

 By M. Treub {Ami. Jard. Bot. Buit. viii. series ii. pp. 85-118; 

 6 plates). — Hydrocyanic acid Is the first recognizable product of the 

 assimilation of nitrogen, and is perhaps the first organic nitrogenous 

 product to be formed. — S. E. W . 



Injurious Insects. By Fabian Garcia {U.S.A. Exp. Stn. New 

 Mexico, Bull. 68; Aug. 1908; figs.). — This is a popular bulletin deal- 

 ing with the various insects commonly proving injurious in New 

 Mexico. No new information is contained. — F. J. C. 



Inoculation of Beans, &C. By H. Garman {U.S.A. Exp. Stn. 

 Kentucky, 19th Rept. {Bull. 125); 1906; figs.). — Experiments on 

 different soils with cultures of nodule bacteria are reported, both dry 

 and moist cultures being tried. The yield was not greater from the 

 inoculated than from the untreated plots and was sometimes less. 



F. J. C. 



Iris minuta. By O. Stapf {Bot. Mag. tab. 8293). Nat. ord. 

 Tridaceae ; tribe Irideae. — Japan. Herb, dwarf and densely tufted. 

 Leaves 18 in. long. Eootstock creeping and branching, with numerous 

 slender tuberculated roots. Perianth 1-1^ in. across, yellow. — G. H. - 



Juncaceae, A New Parasitic Disease of the. By E. J. 



Schwartz {Ann. Bot. xxiv. 1910, p. 236). — Notes the occurrence of an 

 attack in the roots of Junciis of a species of Sorosphaera. There is no 

 hypertrophy ; infection takes place by means of an amoeba through the 

 root hairs. A full account of the parasite, which is named S. junci, is 

 promised later. — A. D. C. 



Leaf-position and Decapitation. By F. Bafsler {Bot. Zeit. 

 Ixvii. 1 Abt. Heft v.-vii. pp. 67-91; July 1909).— When a stem is 



