64 Floristik etc. — Angewandte Botanik. — Personalnachricht. 



E. rubribrunneum , E. pluteiforme, E. commune, E. alcalinum, E. 

 avellaneum, E. washingtonensej E. Cokeri, E. sericiceps, E. subjuga- 

 tum, E. subsinuaiiim , E. Whiteae, E. giganteum, Pluteus niveiis, P. 

 unakensis, P. aurantiacus, P. riigosidiscus , P. melleus, P. lepiotifor- 

 mis, P. melleipes, P. nanelluSj P. glabrescens, P. squamodiscus, P. 

 um.br inidiscus , P. atriavellaneus, P. eximius {Agaricus eximius Pk.), 

 P. pallidicervinus, P. campanulatus, P. brunneidiscus, P. Whiteae, 

 P. longipes, P. ludovicianus, P. griseibrunneus , P. avellaneus, P. 

 deliquescenSj P. fuliginosus, P. fibrillosus, P. latifolius, P. washing- 

 tonensis, P. fulvibadius, P. rnyceniform.is, P. compressipes, P. pul 

 verulentus, P. spinulosus, Chamaeota mammiUata [Annularia fnam- 

 millata Longyear), C. Bvoadwayi, Volvariopsis Loweiana {Agaricus 

 Loweiana Beck.), V. pusilla {Amanita pusilla Pers.), V. piibescentipes 

 {Agaricus pubescentipes Pk.), V. perplexa {Volvaria perplexa Pk.), V. 

 umbonata {Volvaria Pk.), V. Earleae, V. concinna [Volvaria Cle- 

 ments), V. villosovolva {Volvaria Lloyd), V. submyochroa {Volvaria 

 Clements), V. Peckii [Volvaria Atk.), V. speciosa {Amanita speciosa 

 Fr.), V. emendatior {Agaricus eniendatior B. & C), V. viscosa 

 {Volvaria Clements), V. gloriocephala {Agaricus gloiocephalus D.C.). 

 V. alabamensis, and V. volvacea {A. volvaceus Bull.). Trelease. 



Lipman» C. B. and W. F. Gericke. Antagonism between 

 anions as affecting barley yields on a clay-adobe soil. 

 (Journ. Agric. Research. IV. p. 201—218. PI. 29. 1915.) 



Results are given in this paper which establish for the first 

 time, so far as the authors are aware, the existence of antagonism 

 between anions in a clay-adobe soil for barley (^orfi?ez/m) as follows: 



Antagonism is shown between sodium chlorid and sodium sul- 

 phate and between sodium chlorid and sodium carbonate in the 

 second crop. None is shown in the first crop. 



Slight antagonism is shown between sodium carbonate and 

 sodium sulphate in the first crop. It is questionable whether any 

 exists at all in the second crop. 



In subsidiary experiments the foUowing points are established 

 in addition to those named above. 



Marked antagonism exists in both the first and second crop 

 between sodium sulphate and calcium sulphate in soil cultures. 

 This has not been considered possible hitherto by Hilgard. 



In testing the toxicity of Single alkali salts it is found that 

 0.1 per Cent each of sodium chlorid and sodium sulphate stimulates 

 barley in the first crop and reacts poisonously to it in the second crop. 



Sodium carbonate does not manifest toxicity, but, on the contrary, 

 Shows Stimulation even up to concentrations equal to 0.3 per cent 

 of the dry weight of soil. Jongmans. 



Personalnaehrieht. 



Gestorben: Dr. Hermann Vöchting, Prof. der Bot., am 24. 

 November 1917 in Tübingen. 



A-usgegeben : SS Januar 1Ö18 



Verlag von Gustav Fischer in Jena. 

 Buchdruckerei A. W. Sijthoff in Leiden. 



