340 Latham : Stimulation of Sterigmatocvstis 



as seen by Farmer and Waller,* ceased under the influence of ether 

 and chloroform, the latter proving more powerful. 



With various seedlings in an ether atmosphere, Morkowinef 

 obtained increase of respiration in the h'ght ; Bonnier and Mangin I 

 got no such effect in the dark. Puriewitsch, as quoted by Mor- 

 ko\vine,§ concluded that in ether vapor, transformation of sugar 

 to starch is inhibited. Jumelle || beh'eves transpiration increased in 



1 



tion is hindered by the same substance. 



tt 



I- .1, 



i^^^ 



and Lauren l'^ as authorities for the observation that CO^ forma- 

 tion, but not growth, is augmented in higher plants by a not too 

 long exposure to chloroform ; and finally, Johanssen 

 the economic value of ether in forcing early blooming in flowering 

 plants. The period of winter rest is shortened, rapidity of growth 

 and total evolution of CO^ increased. 



The majority of the investigations with chloroform and ether, 

 it will be noted, have had to do with their effect on green plants, 

 Townsend II|j and DuggarT[^ to be sure, experimented with fundus 

 spores but their work stopped with germination ; and Kosinski 

 was concerned only with the respiration factor. It has been the 

 aim of the piece of work here described to compare the effect of 

 chloroform vapor on fungus growth, as shown by increase in dry 

 substance, with the results quoted above. Therefore SUrigmato- 

 cystis nigra {Aspergillus nigcr) in the main and Penicillium glancuni 



* Farmer, J. B. & Waller, A, D. Observations on the action of anaesthetics 

 on vegetable and animal protoplasm. Proc. Royal Soc. 63 : 213. 1S98. 



t Morkowine, N. Recherches sur V influence des anesthesiques sur la respiration 

 des plantes. Rev, Gen. de Bot. 11 : 289. 1899. . 



X Bonnier *& Mangin, I. c. 



II Jumelle, H. Influence des anesthesiques sur la transpiration des vegetaux. 

 Gen. de Bot. 2: 417. 1890. 



Rev. 



TfZaleski, W. Zur Aetherwirkung auf die Stoffumwandlung in den Pflanzen. 

 Ben Deuts. Bot, Gesells. i3 : 292. 1900. 



** Pfefifer. Physiology of Plants, i : 564. Trans, by Ewart. 



tt Elfving. Ueber die Einwirkung von Aether u. Chloroform auf die Pflanzen. 

 Oefversigt af Finska Vetensk. Soc. Forh. 28 : 36. 1886. 



tt Lauren. Bot. Jahresb. 20' : 92, 1892. 



II Johanssen, W, L. Das xVether-Verfahren beim Friihtreiben. Jena, ip"^- 

 Bot. Gaz. 1. c. . 



f f L. c. 



