No. 10. 



Observations on Insects. 



147 



l^ach out door of a house should have, during 

 the winter season, a temporary door accom- 

 p.inying it, with the upper half composed of 

 sa:;li and glass, placed at a distance within 

 the house, rather more than the width of the 

 outer door, and both of them constructed so as 

 to admit the least quantity of air when they 

 are closed. The windows, and the whole 

 outer surface of the house should also be con- 

 structed so as to admit no air except when 

 desired, and then only at the top of the re- 

 spective windows. Each stove pipe should 

 have a damper or valve, similar to that in the 

 tube already described, and made to turn on 

 pivots or fulcrums, so as to close the passage 

 of the pipe to any required degree. The top 

 of each chimney should have an arched, or 

 other covering, to exclude the rain from the 

 flue, but so formed as to permit the smoke to 

 pass off freely. Each Hue should have a 

 damper or valve, to open and close to any re- 

 quired degree. 



Fig. 24. 



A, fig. 1, elevation or vertical projection 

 of a side view of a stove. BBB, ditto, of 

 pipe. C, the end of the horizontal flue or 

 tube, at the outside of the building; the 

 dotted lines show the position of the top, bot- 

 tom, and two ends of the sheet iron casing, 



and the tube, 1, shows a section of the outer 

 wall, opposite to the flue of a chimney. 2, 

 shows a section of a chimney flue. 3, shows 

 a section of the inner wall, opposite to chim- 

 ney flue. 



The cut represents a ten plate stove, with 

 the casing placed partly under the arch of a 

 common fire place, and the flue of the chim- 

 ney ; and another part extending beyond the 

 breast, or inner wall of the flue from the fire 

 place into the apartment ; and the stove pipe 

 is represented as passing up near the ceiling, 

 and down below the arch of the fire place, so 

 as to discharge the smoke from the stove at 

 the lower end of the chimney flue. The 

 lower end of the pipe may be connected with 

 a piece of sheet iron, bent at right angles, 

 and placed below and around the end of the 

 pipe in such a manner as to prevent the pas- 

 sage of any air up the chimney, except what 

 goes through the pipe. The tube from the 

 casing, passes out of the apartment through 

 the back wall of the flre place, and fits so 

 closely to the wall, as to admit no air into 

 the apartment, except what enters through 

 the tube itself. I have represented this in a 

 fire place, because that is the most convenient 

 situr.tion in houses already built, but they can 

 be placed at any other convenient place, and 

 any other kind of a stove used, by making 

 the casing and tube of a suitable form and 

 dimensions. 



P. 



iNnvem*er 21st, 1SS7. 



We find the following highly interesting obiervationa 

 on insects, with a view to airest their destructive 

 ravages, in a paper read before the Agricultural Socie- 

 ty of Bucks counly, fome years finre, by James 

 Worth, Esq. The subject is one nf vast interest to 

 agriculturists, and we ask for this pnper t!iat .ilten- 

 tive perusal and consideration that its importance 

 demands. 



©bservations on Insects. 



BY JAMES WORTH. 



Entomology, or the science of insects, is, I 

 believe, admitted to be very defective in its 

 most essential part; that is, an acquaintance 

 with the habits of insects. It is with insects 

 as it is with man and all other things in na- 

 ture : it is their use, or works, or character, 

 that is the primary object. What care we 

 for the portrait of a man, unless for some great 

 or good work that he has done, or the relation 

 in which he stands to us } The print respect- 

 ing the celebrated English Ox, is indeed a 

 valuable print, but it is only valuable as it 

 shows the essential points of a breed of cattle 

 most easily fattened, and yielding beef of the 

 finest quality. Now what interest have we 

 in the form, or size, or color of an insect, other 

 than to describe a thing that has done to us 



