McNAB—CULTIVATION OF CAPE HEATHS. 367 
are in winter; and when in such a state they will not bear so 
much cold without suffering from it as they will - in the early 
part or middle of winter. For instance, in the spring of 1830 we 
had the thermometer, on the morning of 2nd hase to deg. belawe 
freezin 
I have had the whole heaths in oe house frozen for days 
together so hard that the pots could not be removed from their 
places ener breaking them, and foe 2h i eee oe admitted at 
the time I have never seen one of them suffer in the smallest 
degree a a sok on the contrary, ad pee thrive better than 
under any otl reatment. 
I have sco eee ee the heath-house in winter without fire 
s 
which they will bear; and from that he will learn more than he could 
from volumes written on the subject. A very little observation will 
soon ah ee him that heaths require but little fire heat duri 
winter. n I mention fire heat I consider the mere matter o 
heat the aie whether a —— from fire or from water or 
sm n 
has taken effect in the inside of the house. Then a fire is put on, 
and the frost is driven out. It is better, no doubt, in such a case to 
keep out the thief if you can; but if once let in, keep him in and 
never attempt to force him out. We know that ead in the open 
thermometer has fallen 4 4 on 5 se below freezing inside of the house, 
aera is added so as to raise the temperature and drive out the frost 
ring the time the thermometer is still sinking out of doors, It 
Scat be much better if the house were left without fire heat, even 
