14b 
On Glazing for Hot-House Roofs. 
> 
I have, with this view, sent you my ideas on hot-house glazing, which 
you will see, differs very materially from that given in page 10, of your 
Register, You did not there inform us, what sort of putty was used in 
glazing on Harrison and Curtis’s principle, for I am afraid the common 
putty, as used here, would not answer, because I think it would be 
liable to crack between the joints of the glass, and the water of course 
would find its way into the house; and as it is well known that rafters, &c. 
laid with putty, are apt to decay, my plan is to completely protect the 
joints. By a slight inspection of the drawing, (18) it will be found to 
have a light appearance. Fig. b, is a section of the rafters; cZ e, is a thin 
piece of metal, which runs betwixt every joint on the sash-bars, with the 
upper part divided, so that it will turn over each joint about a quarter of 
an inch. The glass is bedded in putty, on the top of the sash-bars, and 
a little white-lead is put under d e, and when turned down it is rendered 
completely waterproof. Fig. c. is intended to show the plan of the slides 
on the roof for giving air,— f^ is the top of the slide; </, the top of the 
roof. By this plan, the slide can never be blown off’by the wind; and 
the appearance of the whole is light, because there is no projection of 
wood above the glass. 
Yours, &c. 
July 9th, 1831. M. Saul. 
P.S. I should like you to review the one hundred and seventy sorts of 
Apples, published in the Fyrus Malus Brentfordiensis; giving the size, 
ntirae, and colour, and when in use; as the price places it out of the reach 
of the’ amateur gardener."* 
r. 
• Fly a referciicp to the onr corro^jwident will obsciM' that the Uehcriplions, &c. 
ol Apples, will shortly appear.—CONDUCTORS. 
