126 Agricultural Experiment Station, Ithaca, N. Y. 



- Y ». ' . ! ll ' -an 



recently been abundantly shown that carbon assimilation takes place* 



and in such amounts as in some cases to be a profitable use of such 



means of lighting. 



Finally, the question of the oi-igination of varieties, especially suited 



to forcing-house culture should be taken up, keeping in view the 



desirability of the proportionate and harmonious evolution of correlated 



structures and functions . 



GEO. F. ATKINSON. 



* Famintzin, Die Wirkung des Kerasin — Lamp lichtes &\d Spirogyra ortho- 

 spora Nseg, Bulletin d. 1' Acad. Imp. d, So d. St. Petersbourg, T. 10, column 

 4-14, 1865, also, T. 12, col. 97-108. 



Prillieux, de 1' influence de lumiere artificielle sur la reduction de 1' acide 

 carbonique par les plantes. Compt. Rend, d, Sci. Paris, 1869, 2d Sem., pp. 

 408-412. 



Heinrich, VeiBuchs-Stationen, 1871, xiii, p. l.'JS. 



Famintzin, Die Zerlegung der Kohlensaure durch Pflanzen bei kiinsthichen 

 Beleuchtung. Bull. d. 1* Acad. d. sci. d. St. Petersbourg, T. 20, pp. 136-142, 

 1880. 



Die Wirkung der Intensitat des Lichtes auf die Kohlensaurererzetzung durch 

 Pflanzen Ibid pp. 296-314. 



Deherain et Maquenne, Sur la decomposition d 1' acide carbonique par les 

 feuilles ^dairies par lumiere artificielles. Ann. Agronomiques, T, v, 1880, pp. 

 401-416. 



Famintzin, La decomposition de 1' acide carbonique par les plantes exposees 

 a la lumiere artificielles. Ann. d. Sci. Nat. Bot., 1880, T. 10, pp. 62-66. 



Siemens, On the influence of electric light on vegetation and on certain 

 principles involved. Proceed. Roy. Soc. 1880, vol. 30, pp. 210-219. Some 

 farther observations on the influence of electric light on vegetation. Same 

 voL, pp. 293-295. Recent applications of the dynamo — electric current to 

 Horticulture, etc. Editorial in Nature. Vol. xxii, 1880, p. 185. 



Ricasoli-Firidolfi, L'. Orticulturs elletrica. Bull, della R. Soc. Tosc. d' 

 Orticult, V. 8, Firenge, 1880. Cited in Just's Bot. Jahresli, 1880, 1, p. 315. 



Siemens, Ueber den Einfluss des Elektriscben Lichtes auf die Pflanzen, 

 Forschungen auf dem Gebiete der Agriculturphysik Bd, 5, S. 486. See Just's 

 Bot. Jabresb., 1882, i, p. 43. 



Wittrock, Om elektriska Ijusets inflytande pit vaxterna, Svenska Tradgards 

 fiireningens Tidskrift, 1882. Refers to Siemen's researches upon continuous 

 electric lighting and compares the results with the long known facts concern- 

 ing the effect of continuous simshine in the arctic region which hastens develop- 

 ment, and produces beautiful and pure colors in flowers, and promotes the 

 formation (;f fruits rich in aroma, and hardy seeds. See Just's Bot. Jabresb. 

 1873, p. 564. 



Bronold, Ueber Elektrische Pflanzenculturversuche Zeitschrift d. landw. 

 Vereins in Bayern, 1884, Jahrg. 74, Heft, i, p. 16-18. See Just's Bot. Jahreb. 

 1884, i. p. 6. 



Bailey, Some preliminary studies of the Influence of the Electric Arc Lamp 

 upon Greenhouse Plants, Bulletin 30. Cornell University Agr. Exp. Station, 

 Aug. 1891. 



