ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 01 



M i-.rril, G. K.— Li:hen Nctes, No. 7. (A list of lichens from the Upper Yukon 

 collected by J. Macoun.) Bryologist, xi. (1908) pp. 105-11. 



Wilson, A., & J. A. Wheldon— Inverness-shire Cryptogams. (A large number 

 of lichens are included in this list.) Journ. Hot., xlvi. (1908) pp. 353-G. 



Zahlbecckjee, A.— Schedae ad ' Kryptogamas exsiccatas ' editae a Museo Pala- 



tino Vindobonensi. Lichenes (Decades 35 38). 



[Diagnoses are given of some of the species and 

 bibliography of all those listed.] 



Ann. h.k. Nat. Hofmuseums, Wien, 

 1907, pp. 107-17. 



,, ,, Lichenes Amazonici. (First contribution to the Lichen 



flora of Brazil.) 



Bol, Mus. Goeld., v. pp. 258-61 (1908). 



Schizophyta. 

 Schizomycetes. 



Elastico-tropic Appearances in the Growth of Bacillus anthracis 

 and Allied Bacilli in Serum Medium.* — P. Eisenberg considers that the 

 peculiar feathery growth of B. anthracis aud other organisms ou inspis- 

 sated serum must he regarded as a meau of the elastic-pulling force, 

 influenced by two factors — the force of gravity and the drying of the 

 medium towards the edges ; the pulling forces being directed respectively 

 from above vertically and from without horizontally, giving the branches 

 a resultant diagonal direction. The firmness of the serum and the strong 

 aerophilia of the organism limit the branched growth almost entirely to 

 the surface, thus contrasting with the growth of B. Zopfii in the substance 

 of gelatin. 



Tetragenus tardissimus.f — G. Altona has isolated a new variety of 

 micrococcus from the blood and liver of guinea-pigs which had died in 

 his laboratory at Sassari, after a wasting illness of about twenty days 1 

 duration. The organism grew as a small non-motile micrococcus arranged 

 in tetrads and usually inclosed in a capsule ; it stains readily with anilin 

 dyes and by Gram's method ; it does not grow below 15° C. and flourishes 

 best at 37° C, but on various media the growth is slight ; in broth it 

 forms a fine dusty deposit, the medium remaining clear ; if blood-serum 

 is added to the broth the growth is more abundant and the fluid is 

 clouded ; it does not coagulate milk ; on agar it forms small round 

 granular colonies with jagged margins ; on serum-agar the colonies are 

 larger and may become confluent ; on nutrient gelatin growth is scanty 

 and slow, appearing only after 2 to 3 months, the colonies bavin _ 

 brown tint and granular structure ; the gelatin is not liquefied ; glucose 

 is not fermented. Animal inoculation gave negative results. 



Organisms of the Gaertner Group.}— AY. I). Savage finds that 

 fuchsin-agar and lactose-bile-salt-neutral-red-agar are media which allow 

 the organisms of the Gaertner group to be sharply differentiated from 

 those of the B. coll group, and are valuable for isolation purposes. 

 Malachite-green 0*05 p.c. exerts an inhibitory action upon the growth 

 of B. coll, and the author obtained gocd results in the isolation of 



* Centralbl. Bakt,, lte Abt. Orig. xlviii. (1908) p. 125. 



f Tom. cit.. p. 42. J Rep. Local Govt. Board, 190G-7. p. 25-3. 



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