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A FEW WORDS ABOUT HEDGES. 



preaches the furnace, is certainly so much 

 saved, requiring less heat from the stove to 

 raise it to a proper temperature. I believe 

 it to be more simple, and cheaper in its 

 construction. There is no expansion of 

 any part by heat, that can in the least de- 

 gree affect the permanency of the structure. 

 There cannot the least quantity of deleteri- 

 ous gas escape through the brick work, (as 

 is possible in the Polmaise,) for there is 

 none that comes in contact with the fire. 

 With a differently constructed stove, coal 

 may as well be used as wood. But here, 

 as in many parts of country, wood is much 

 the cheapest ; and as it can be used market 

 length, or four feet long, and of almost any 

 size, there is no expense in preparing it for 

 the stove. 



A friend of mine has suggested the pro- 

 priety of covering the top of the stove, and 

 half down its sides, with 4-inch brick work ; 

 believing it will throw out its heat with 

 much greater regularity. 



Would it not have this effect ? And 

 would there be anything lost or gained 

 in communicating the necessary heat to 



this additional quantity of brick and mor- 

 tar? A SUBSCKIBEB. 



Monroe, Michigan, Nov., 1848. 



[This appears to be a clever application 

 of the same principle, in warming green- 

 houses, as that called the Polmaise. The 

 heat would be rendered more moderate and 

 steady, and, therefore, be less liable to injure 

 the plants, by having the stove partially, or 

 wholly covered with brick work. 



We think it very important that a supply 

 of fresh air (from out of doors,) should also 

 be furnished to the hot-air chamber ; be- 

 cause, as our correspondent's apparatus is 

 now arranged, the only supply of air is 

 drawn from the interior of the green-house, 

 to be warmed ; as a necessary consequence, 

 there will be a deficiency of fresh and pure 

 air for the plants. This is easily obviated, 

 by having another cold-air drain, commu- 

 nicating with the open air, with a valve or 

 slide, so that it may be used whenever ne- 

 cessary. It may, indeed, always be opened 

 with great advantage when the temperature 

 of the house rises too high, or too rapid- 

 ly. Ed.] 



A FEW WORDS ABOUT HEDGES. 



BY P. W. R., NEW- YORK. 



1 AM delighted with the Osage Orange, as 

 a hedge plant. When I was in Ohio, a 

 short time since, I saw several miles of this 

 tree, in all stages of hedge growth, from 

 plants six inches high to well grown hedges, 

 measuring seven feet in height. Its beau- 

 tiful, polished and glossy foliage, and 

 healthy, luxuriant growth attract the eye, 

 even at a distance. In fact. I have never 

 seen any hedge, except one of holly, (which 

 does not appear to thrive in the northern 

 states,) so handsome, taken altogether, as 



the Osage Orange. It is also possessed of 

 most efficient means of defence, in its long 

 and sharp thorns; which, though they are 

 somewhat concealed by the leaves, make 

 themselves felt at the least approach of any- 

 thing " on the attack." 



It is, perhaps, yet a question, precisely 

 how far north the Osage Orange will 

 thrive, as a hedge plant, — since it comes 

 originally from Arkansas. 



I will state, however, that I have seen a 

 neat hedge of this tree in the grounds of 



