186 



STATE HORTICULTURAL SOCIETY. 



being to select a pane that fits closely and to fill the cracks with white 

 lead. In either of these methods of glazing, the glass lies flat on the sash- 

 bars and there is no place underneath that must be filled with paint or 

 putty, or left open to allow the entrance of water and the rotting of the 

 sash-bars. 



LAPPED GLASS. 



On the remainder of the house the glass was lapped. In some cases it 

 was bedded in putty and in others thick paint or thin putty was run in 

 from the outside. 



The panes were lapped one eighth of an inch, and every effort was 

 made to have the joints as tight as possible. Despite our care, the roof is 

 not as tight as could be wished. In fact we have never seen a lapped 

 roof that was absolutely tight, while the cracks widen as the years go by. 

 By this method of glazing slightly more glass is required than when 

 the panes are butted, and the doubling of the glass at the lap will lessen 

 the amount of light that can enter the house. 



Figure 7 shows a method of glaz- 

 ing that has been extensively used 

 in commercial houses, and so far 

 as we have heard, it has given 

 general satisfaction. It can be used 

 either with butted glass or with 

 f Gasser's glazing strip. (We are 

 indebted for the cut to Mr. Gasser. ) 

 The strip of wood can be drawn 

 down upon the glass by means of 

 screws or by nails. No putty need 

 be used, although paint putty is 

 often run on to fill the crack. 



Whatever method of glazing is 

 used, the panes should fill the 

 space between the sash bars. 



{Fig. l.—Netc Method of Glazing.) 



PUTTY BULBS. 



For a number of years the custom has been to bed the glass in putty. 

 This filled the cracks at the sides and beneath the panes, but if the roof 

 was not painted every year or two, the putty would not stay in place. 



Various machines have been invented, by which rather thin putty is 

 applied to the sash bars. 



With putty at the right consistency, and with a little experience in using 

 them, they work very well, although a good glazier can run on the putty 

 nearly as fast from the hand. 



One machine is sold by J. H. Ives, Danbury, 

 Conn. When the putty is of proper consistency 

 it works easily and can be used either for spread- 

 ing the putty for bedding, or for filling the 

 cracks after the glass is set, between the sash-bar 

 and the paiie. either inside or out. For back-put- 

 tying an old roof it is particularly desirable. The 

 so-called putty l^ulb is also much used. The kind 

 tested on the forcing house was obtained from H. 

 W. AVilliams & Co., Batavia, 111. It consists of 

 a bulb about like that of the Scollay sprinkler, (Fig. s.-zues' Putty Machine.} 



