1840 



l*i:KV()sr. lu'clicrclics sur Ics ;iirnii;il('iil('S spcniiiil i(iiu's. 

 C.r. Acdtl. Sci., II, I)(I7~!H)S; ( l-'i^cc/iiii;- of fro,;;' spci-iiinlo- 

 zoa). 



1848 



DixAL. F., Dos effots de la geU'o sur Ics plnntes. Mem. 

 Ac. MouipcU'wr. Sect. Sci., 1, 15:1. 



1850 

 Le Coxtk, J., Obsoi'vatioiis on a Iiciiiaikablc Exudaliou 

 of Ice from llio Stems of Vegetables and on a Singular 

 Protrusiou of ley Colunms from CV'rlain Kinds of Kartli 

 during Frosty Weather. Loiidon-Ediiih. Phllos. Mag., '30, 

 329-342. 



1852 

 Le Conte, J., Observations on the Freezing of Vegeta- 

 bles and the Causes Which Enable Some Plants to En- 

 dure the Action of Extreme Cold. Aw. J. Sci., 63, 84-92, 

 195-206. 



1853 



Goeppert, H.R., Ueber das Verhalten der Pflanzen bei 

 niederer Temperatur. Bot. Ztfj., 11, 123-124. 



DE QuATREFAGES, A,, Reclierclies sur la vitalive de quel- 

 ques poissons d'eau douee. Ami. Sci. Xdf.. ( ."!), /.'', 341-3(19; 

 (Freezing of tish spermatozoa). 



1854 

 Caspary, R., Auft'allende Eisl)ildung auf Pflanzen. Bot. 

 Ztg., 665-674, 681-690 and 697-706. 



1855 

 CASPAitv, P., Ueber l^^i-ostspalten. Bol. Zlg., 449-462, 

 473-482 and 489-500. 



1860 

 Sachs. .J., Untersuchungen iiber das Erfrieren der 

 Pflanzen. Luinhr. Vcrsiiclis-Shil .. Xo. 5, 167-201. 



