86 = Prof. J. Le Conte on the Freezing of Vegetables. 
that, in such cases, the freezing is incomplete and does not in- 
volve all of the structures of the plant. Thus for example, M. 
liber 
e dont le 
périt presque toujours, soit que la gelée du liber soit un signe de 
la gelée totale de Vaubier, soit que le role du liber soit luiméme 
plus important et lié avec la congélation de tous les bourgeons.”* 
Again he says, “Si elle (la temperature) descend au-dessous de 
la congélation, elle solidifié d’abord V’eau située a l’exterieur du 
fragment de la plante oi elle a lieu, soit, comme ont cru pli 
sieurs auteurs, par la rupture des cellules et des vaisseaux (fait 
que les recherches récentes de M. Gceppert: rendent au moili 
necessarily dies. It is true, that several facts which seem '0 
contravene this opinion have not failed to arrest. the attentio! 
of several botanists. Thus M. De Candolle cites the fact, a 
tested by M. Thouin, that the cases of apple trees sent to M 
cow, arrived there in a frozen condition, and that a great patt 
of them were saved by gradual and slow thawing.|| It appé 
however that such phenomena have attracted but little attentio”: 
and provoked no scientific research; they have remained bat 
ren and isolated facts in the field of science. eae, 
S297) ASI eaneeneenereeeeee Z io 
* Physiologie Végétale, tome 8, p. 1119, Paris, 1839. 5 
| p. ¢it., supra tome 3, p. 1101. , 
Principles of Descriptive and Physiological Botany, Lardner’s Cabinet CysloP® 
ondon, 1844, 
dia, ape L ; rhe 
§ Op. cit. p- 178, | Physiologie Végétale, tome 3, p. 112 
