164 



FROST. 



[CH. VII 



the petiole does not take place and the position of the 

 leaves with regard to the branch is quite different'. 



Fm. 32. Exp. 209. 



^ During frost the curious downward curvature of the branches of the 

 lime (Tilia) should be noticed: frozen branches assume their normal 

 form when they are brought into a warm room. See Caspary, Beport of 

 Intemat. Sort, 'Exhibition, 1866, also Geleznow, Bull. Acad. Petersburg, 

 1872. 



