ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 231 



« W. Zopf * also contributes a paper on the same subject, and gives 

 the substances found in a series of Lichens. He records several new 

 bodies. Strepsilin, which becomes bright olive-green on addition of 

 •chloride of lime, is the cause of the colour reaction of Gladenia strepsilis. 

 Destrictinacid, a colourless substance, was found in Cladonia destricta, 

 and Leiphamacid in Hcematomma leiphamum ; and in Usnea hirta, a 

 substance which is termed Hirtellacid. 



Hasse, H. E.— Contributions to the Lichen-flora of the Californian Coast Islands. 



Bull. South Calif. Acad. Sci., ii. (1903) pp. 33-5. 



„ Additions to the Lichen-flora of Southern California. 



Tom. cit., pp. 52-4, 58-60, 71-3. 



„ „ The Lichen-flora of San Clemente Island. 



Tom. cit., pp. 54-5. See also Ami. Mycol, i. (1903) pp. 573-4. 



[In these three publications the author gives contributions to a Lichen-flora 

 of California. There are several new species determined by Nylander.] 



Sen ft, E. — Beitragzum Vorkommen von Flechten auf offizinellen Rinden. ii. Cortex 

 Cascarillae. 



[The author gives an account of the most characteristic Lichens found grow- 

 on medicinal bark. He has discovered one new species, Arthonia Voglii.] 



Apoth.-Ver., 1903, No. 32, pp. 891-9 (S figs.). 

 See also Ann. Mycol, i. (1903) p, 575. 



Zahlbruckneb, A. — Vorarbeiten zu einer Flechten flora Dalmatiens, II. 



[The author has worked on Lichen material collected by several botanists. 

 A number of new species are described.] 



Osterreich. Bot. Zeitschr.,\iii. (1903) pp. 147-9, 177-85. 



239-46, 285-9, 332-6. 



Schizophyta. 

 Schizophyceae. 



Schizophyceae in Marine Plankton.f — N. Wille publishes a resume 

 of the forms of Schizophycere hitherto met with among marine plankton, 

 as an introduction to Brandt's Nordisches Plankton. Among other 

 novelties in the systematic treatment of the Myxophyceaj, he places the 

 genus Chroothece Hansg. in Glaucophycere (Bangiales) ; Heliotrichium 

 radians Wille is identified with Trichodesmium Thieoautii Gomont, and 

 a more complete and accurate description of Xanthothricum contortum 

 Wille is given under the name of Trichodesmium contortum Wille. All 

 the genera are illustrated by figures taken from the works of Kiitzing, 

 Bornet and Thuret, Gomont, Mobius, Schiitt, J. Schmidt, and others. 



Schizomycetes. 



Slime Bacterium from the Peach, etc4 — R. Greig Smith has 

 separated from the peach, the almond, and the cedar, races of an 

 organism, Bacterium fKrsica. This is an aerobic, spore-bearing non- 

 motile rod, measuring 1 ■ 2-3 ■ 6//., or even 7 • 5/z in hanging drop pre- 

 parations, and decolorised in parts by Gram. It produces a slime when 

 grown upon solid media or in fluid media containing saccharose. When 

 grown upon solid media the saccharose can be replaced by many other 



* Ann. Chem. cccxxvii. (1903) pp. 317-54. See also Ann. Mycol., i. (1903) 

 pp. 576-7. 



t Nordisches Plankton. K. Brandt, Leipzig, 1903. See Nuov. Not., xv. (1904) 

 p. 45. % Proc. Linn. Soc. N.S.W., xxviii. (1903) pp. 338-48. 



