Gelelirte Gesellschaften. 125 



Von sonstigen Verwandten der Gattung Erodium zeigt z. B. 

 noch Monsonia pilosa W.*) besondere Saftflecke, 



Erklärung der Figuren. 



Fig. 1. Erodium cicutarium L'Herit. , ungefleckte Form von Greiz. 

 b Blüte, b\ Erstlingsblatt. E. cicutarium b. pimpinellifolium Willd. (als Art), 

 gefleckte Form von Schmalkalden. a Blüte, ai Erstlingsblatt. 



Fig. 2. E. cicutarium b. pimp. Willd. a ein unteres, b ein oberes 

 Blumenblatt, gewöhnliche Form, c Kloschwitzer Form nach einer Zeichnung 

 von Prof. Liebe, d, e, f, g, h, i gewöhnliche beobachtete Abänderungen 

 des Saftmales, Tc, l Form des Saftmales von Amsterdamer Exemplaren. 



Fig. 3. E. carvifolium (nach Exemplaren aus dem Göttinger botanischen 

 Garten), a unteres, b oberes Blumenblatt. 



Fig. 4. E. macrodenum. a unteres, b oberes Blumenblatt. 



Fig. 5. E. Manescavi. a Blüte, b unteres Blumenblatt. 



Gelehrte Gesellschaften. 



Linnean Society of London. 



Sitzung vom 17. April 1884. 

 Alfred W. Bennett, M.A., in the chair. — Messrs. Benjamin 

 Lomax and R. Lloyd Patterson were elected Fellows of the 

 Society. — Dr. J. Poland exhibited under the microscope a series of 

 preparations, stained by reagents, illustrating the Bacillus of Anthrax from 

 man. He remarked that the Bacillusspores in many instances doubtless 

 were conveyed in the dried skins and hides imported from abroad, and that 

 these spores under favourable circumstances inoculated those handling the 

 dried hides, &c.. the germs afterwards developing in the usual manner of 

 such low vegetable organisms in the human body, and setting up the severely 

 fatal malady in question. — A paper was read by the Rev. J. M. Crombie, 

 „On the Algo-lichen-fungal Hypothesis\ The author gave a 

 brief sketch of the hypothesis enunciated by Seh wendener, Bornet, 

 and others , noticing the various arguments and illustrations which had 

 been adduced in its support. He then discussed the result which had beeu 

 obtained from experiments in lichen-cultures , whether from the spore or by 

 synthesis, observing that in both cases these were confessedly but small, 

 owing to the very great difficulty of cultivating beyond a rudimentary stage, 

 except under the same atmospherical conditions in which they grow in 

 natm-e. Two fatal objections, he said, might be taken to the theory : (1) the 

 one having reference to the very peculiar nature of the parasitism it assumes; 

 and the other (2) to the fact that, notwithstanding a similarity of appearance, 

 there were in reality no true fungal-mycelia nor true algal-colonies in lichens. 

 As to any direct genetic or any indirect parasitical connection between the 

 gonidia of lichens and the hyphal filaments, it was further pointed out that 

 none such existed, but that on tracmg the evolution of the thallus from the 

 germinating spore it is seen that the gonidia originate in the cellules of 

 the first parenchymatous tissue formed upon the hypothallus ; and that sub- 

 sequently , through the resorption of the lower portion of the cortical 

 structure, they became free, and constituted the thin gonidial Stratum. 

 Where seen lying amongst the medullary they are offen attached to these, 

 not as the result of any copulation , but by means of the lichenin which 

 permeates the whole thallus. The origin of the gonidia and their relations 

 to the rest of the liehen thallus, the author stated in conclusion, thus 



*) Dieselbe hat grosse, gezähnte, wellenförmig buchtige Blumenblätter 

 von prächtiger Färbung: auswendig grünlich, nach der Spitze zu röthlich 

 geädert, innen incarnatroth bis weiss, am Grunde mit blutrothen Flecken. 



