104 MORPHOLOGY, ETC., OF FUNGI, BACTERIA, ETC. [Bot. Absts. 



711. Don caster, L. Note on an experiment dealing with mutation in bacteria. Proc. 

 Cambridge Phil. Soc. 19: 269. 1919. 



712. Elliott, John A. A smut on Iresine. Mycologia 11 : 87-88. Fig. 1-4. lQ\9.—Toly- 

 posporium iresine sp. nov. is described as attacking the flowers of Iresine paniculata from 

 Indiana. — H. R. Rosen. 



713. Fischer, E. Neueres uber die Rostkrankheiten der forstlich wichtigsten nadel- 

 holzer der Schweiz. [Recent information about important rusts of conifers of Switzerland.] 

 Schweiz. Zeitschr. Forstw. 49: 113-120. 1918. — Review of recent European advances in knowl- 

 edge, without bibliographical citations, of the following: Cronartium asclepiadeum, Peri- 

 dermium pini and Cronartium ribicola on Pinus; Melampsorella caryophyllacearum, Calypto- 

 spora goeppertiana, Puccinastrum circaeae, Melampsora abieti-caprearum on white fir (Abies); 

 Chrysomyxa rhododendri, C. ledi, Thecopsora sparsa, Aecidium strobilinum, Ae. conorum- 

 piceae on Picea; 4 species of Melampsora having aecia on Larix and telia on certain species of 

 Salix. — D. Reddick. 



714. Fraser, W. P. Cultures of heteroecious rusts in 1918. Mycologia 11:129-133. 

 1919. — By using fresh aeciospores obtained from rusted plants of Ranunculus Macounii suc- 

 cessful infections, with the production of uredinia and telia of Uromyces Alopecuri Seym., 

 were obtained on Alopecurus aristulatus while Agropyron tenerum and Hordeum jubatum 

 failed to show infection. Aecia of Puccinia augustala Peck were produced on Mentha cana- 

 densis by using telia from Scirpus atrovirens. Successful infections of Puccinia Impatientis 

 (Schw.) Arth. were obtained on Hordeum jubatum by using aeciospores from Impatiens 

 bifiora. Uredinia and in most cases telia of Puccinia Agropyri E. and E. were produced on 

 Elymus canadensis, E. virginicus, Hordeum jubatum and Bromus cilialus by using aeciospores 

 from Thalictrum dasycarpum. Urediniospores from Bromus failed to infect Elymus virgini- 

 cus, Agropyron Smithii, A. tenerum, A. repens and Hordeum jubatum suggesting the possibility 

 of two kinds or strains of aecia on Thalictrum. — H . R. Rose?i. 



715. G[ager], C. S. The Ames bequest. Brooklyn Bot. Gard. Rec. 7:23-24. Jan., 

 1918. — The fungus herbarium (517 specimens) and library of the late Frank H. Ames- 

 bequeathed to Brooklyn Botanic Garden. — C. S. Gager. 



716. Gauman, E. Uber die Spezialisation der Peronospora calotheca DeBary. [Speciali- 

 zation of P. calotheca.] Svensk Bot. Tidsskr. 12:433-445. 2 fig. 1918.— See Bot. Abst. 3, 

 Entry 765. 



717. Gauman, E. Uber die Spezialisation der Peronospora auf einigen Scrophulariaceen. 

 [Specialization of Peronospora on Scrophulariaceae.] Ann. Mycolog. 16: 189-199. 6 fig. 1918. 

 —See Bot. Abst. 3, Entry 766. 



718. Gussow, H. T. The Canadian tuckahoe. Mycologia 11: 104-110. PI. 7-9. 1919. 

 — Black sclerotia are found in Canada whose habitat is among the roots of poplar woods. They 

 range from the size of a hen's egg to that of a cocoanut, bouncing like a solid rubber ball when 

 fresh. The bark seems structureless and sand and stones are frequently found imbedded 

 within the interior which is blackish olive-green mottled with dirty-white crevices. A sclerot- 

 ium which was planted outdoors produced a fruiting body in 10 months. Grifola Tuchahoe 

 sp. nov., a stiped polypore, is the name given to this body. — H . R. Rosen. 



719. Hawk, Philip B., Hamilton R. Fishback, and Olaf Bergeim. Compressed 

 yeast as food for the growing organism. Amer. Jour. Physiol. 48:211-220. 1919. — See Bot. 

 Absts. 3, Entry 806. 



720. Hawk, Philip B., Clarence A. Smith, and Ralph C. Holder. Baker's yeast as 

 food for man. Amer. Jour. Physiol. 438: 199-210. 1919.— See Bot. Absts. 3, Entry 807. 



