[Interior, manufacturing shop, metal melting furnace oven.]
Dentist Laboratory, articulating Machines.
Dentist Laboratory, buffing and grinding machines.
Dentist Laboratory, locker Room.
118 Maiden Lane. Elkworth, melting pot and blast furnace.
Dentist Laboratory, general view of classroom looking south.
Dentist Laboratory, general view of classroom looking north.
Dentist Laboratory, taking working drawer out of cabinets.
East 22nd Street. Empire Hat co., gas furnace for melting lead.
10 E. 31st Street. Livingston Radiator Co., small furnaces for soldering irons.
Furnace and boiler room
Gas laboratory
[Interior, detail of oven furnace.]
Repairing grate bars to furnace, before and after.
20 John Street. Goldsmith Bros., crucible and muffler furnace.