337 



*v* 



DECEMBER. 



The uncertainty of the weather in this month requires 

 the operator to be constantly on guard, to ward off 

 danger, either from frost, snow, or cutting winds. The 

 temperature observed last month must be continued, 

 but not exceeded, which would cause premature vege- 

 tation, of which the result and effects have already 

 been frequently observed. Always kindle the fires in 

 time, to prevent the heat from being lower than what 

 has been mentioned, lest a severe frost should take, 

 as then a considerable lapse ensues before the fire 

 has any effect, and if the wind blows high, the result 

 might be injurious, unless the house be very close. 



OF SHUTTERS. 



The benefit of these in severe weather is of materi- 

 al service, for the preservation of an even temperature 

 in the house during the night, when changes are not 

 observed, but they ought never to remain on through 

 the day when the fire can be properly attended to. If 

 the front and the lowest sash of the roof are covered 

 with these, it is generally sufficient. They should be 

 made of half inch boards, closely grooved together, 

 having a cross bar in the centre, and one at each end 

 with one at each side, which will make them substan- 

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