BOTTLE GLASS.
Raw materials--Furnaces--Predominance of tank furnaces--
Process of blowing bottles by hand--Gathering,
marvering, blowing--Use of fire-clay and metal moulds--
Formation of neck--Improved appliances, moulds and
tools--Manufacture of bottles by machinery--The
“Boucher” bottle-blowing machine--Annealing of bottles--
Large bottles, carboys--Aids to the blower--Sievert’s
process--Large shallow vessels, bath-tubs _p._ 95