following particulars. The table measures 5 feet long, 2 feet 11
inches wide, and is 2 feet 9 inches high.

Fig. 7.

It is provided with a single gas socket, into which either a large or
small gas tube may be screwed. The larger tube is 5.5 inches long and
0.75 of an inch in diameter. The smaller tube is the same length, and
half an inch in diameter. The axis of the larger tube is 3.5 inches
above the table at the point of support, and is inclined to the
horizontal at an angle of 12 deg.. The axis of the smaller tube is 2.5
inches above the surface of the table, and is inclined to the
horizontal at the same angle as the larger one.

The air jets are simply pieces of glass tube held in position by
corks. The gas supply is regulated by a well-bored tap. The air
supply is regulated by treading the bellows--no tap is requisite.
The bellows employed are ordinary smiths' bellows, measuring 22 inches
long by 13 inches wide in the widest part. They are weighted by lead
weights, weighing 26 lbs. The treadle is connected to the bellows by
a small steel chain, for the length requires to be invariable. As the
treadle only acts in forcing air from the lower into the upper chamber
of the bellows, a weight of 13 lbs. is hung on to the lower cover, so
as to open the bellows automatically.

The air jets which have hitherto been found convenient are:
for the small gas tube

(1) a tube 0.12 inch diameter drawn down to a jet of 0.032 inch
diameter for small work;

(2) plain tubes not drawn down of 0.14 inch, 0.127 inch, and -0.245
inch diameter, and for the large gas tube, plain tubes up to 0.3 inch
in diameter.

The table is placed in such a position that the operator sits with his
back to a window and has the black calico screen in front of him and
to his right. The object of the screen is to protect the workman
against draughts. The table is purposely left unscreened to the left
of the workman, so that long tubes may be treated.

Sec. 17. Other appliances which will be required for glass-blowing are
of the simplest character.

(1) Small corks for closing the ends of tubes.

(2) Soft wax--a mixture of bees' wax and resin softened by linseed
oil to the proper consistency, easily found by trial, also used for
temporarily closing tubes.

(3) A bottle of vaseline for lubricating.

(4) An old biscuit tin filled with asbestos in shreds, and an asbestos
towel or cloth for annealing glass after removal from the f