Positive blowers and exhausting apparatus of a great variety of forms have been used in mines for producing artificial ventilation.
It is possible that the picture does not represent Egyptian glass-blowers, but is a traveller's record of the process of glass-blowing seen in some foreign or subject country.
Glass-blowers may have been amongst their captive craftsmen, and may have started the industry in Egypt.
The Roman glass-blowers were masters of all the ordinary methods of manipulation and decoration.
In 1550 eight Muranese glass-blowers were working in or near the Tower of London.
The gases evolved from the sudden outbursts or blowers in coal, which are often given off at a considerable tension, are the most dangerous enemy that the collier has to contend with.
The former of these ways is followed by the very skilful and intelligent blowers in Sweden, who, with the temperature and all other conditions well under control, and with their minds set on the quality rather than on the quantity of their product, can thus make steel of any desired carbon-content from o io to 1.25%.
The supposed figures of glass-blowers in early scenes are really those of smiths, blowing their fires by means of reeds tipped with clay.