478 Transactions. — Miscellaneous. 



and then leave an overlap on the sill, to prevent direct draught, 

 of fin. The meeting-rails of the two sashes are l^in. deep, so 

 that the 2^in. lift separates them vertically lin. clear from 

 each other. These two openings are each 3ft. long, and the 

 clear space between the two panes of glass and the edge of 

 each opposite meeting-rail is fin., giving 45 square inches 

 for air-entrance. The clear lift vertically exceeds this maxi- 

 mum air-space by fin., and is perhaps not strictly neces- 

 sary ; but it will at least tend to reduce any throttling of 

 the passage, and possibly to the tranquillising of the air which 

 enters when a wind is blowing. For the hot-air exhaust the 

 cone above the centre-flower is 12in. in diameter at the base ; 

 a 4in. circular heavy galvanised-iron pipe is soldered into the 

 top of it, and passes upwards into the roof, there being no floor 

 above, and connects, together with a similar pipe from another 

 room, into a 6in. main pipe, on the top of which is fitted a 6iu. 

 Torpedo exhaust ventilator. Plate XLIX., fig. 3, shows a 

 section and part elevation of a room fitted with the three 

 kinds of air-inlet, and the one of exhaust, which have been 

 described. 



In two houses at Home I found very satisfactory results 

 from an elaborate ventilating gas-pendant, with large argand 

 burner and globe, in performing the threefold duty of admitting 

 fresh air, of carrying away into the chimney the products of 

 its own combustion, and of removing the hot air from the 

 room. These are, however, costly fittmgs, even at Home, and 

 I prefer admitting the fresh air into the room at a lower point 

 than they did. Of admitting air to the fire in the way de- 

 scribed and to the room by Tobin ventilators I had very 

 favourable experience for many years at Home, and can re- 

 commend both with absolute confidence as a great addition to 

 comfort, by preventing draughts and by adding to the purity 

 of the air. 



In conclusion, I would venture to express the hope that 

 the simple effort made in this paper to familiarise householders 

 with arrangements which are possible, at moderate expense, 

 in the departments of sanitation and ventilation may result, 

 as they certainly have done for a good many years in my own 

 experience, in making some homes more healthy and enjoy- 

 able. 



