230 H. Goadbyon making wet Preparations of Animal Substances, 
man of war), fig. 10, will give an idea of this form of vessel; 
the original box is eight inches high by two inches wide, five- 
eighths deep from back to front: a represents the front side, b 6, 
the end pieces, c, a block of polished plate-glass half an inch thick 
to which the upright box is cemented, d, a thinner plate of glass 
forming with ¢ a handsome pedestal and heavy support for the 
upright vessel.* 
The joints of the pedestal, and of the box to the thick upper 
plate, must be made with Canada balsam or the chloroform prep- 
aration of marine glue for the sake of transparency ; the box must 
be made, as before directed, with the patent marine glue. When 
large surfaces of glass are to be cemented together, the iron-plate 
is insufficient for the purpose and another plan must be had re- 
course t ave already remarked that a red-hot soldering iron 
may be applied to the edges of glass with considerable impunity, 
and I avail myself of this fact in the manufacture of large U 
right vessels. Fig. 11 represents the several forms of such irons 
11, 
* The mode of grinding a box of the height here mentioned, does not in any © 
spec d. pees are ; 
erably elongated and must firstly be made true in eRe aah their longer axis 
——the top and bottom is not to be ground until the hollow box be perfect. 
