. Glass. i. MEDIAEVAL TREATISES ON GLASS the ninth century. The manuscript in question, whichis attributed to the year 1023, has been carefully repro-duced by the monks of Monte Cassino where it ispreserved. The full-paged miniature is to be foundin a chapter headed De Vitro; I can, however, discovernothing in the text that throws any light on our the illustration we see to the left a nearly naked work-man who holds a mass of some green material, perhapsthe frit; another man is blowing through a tube what isprobably meant for the unfinished cup; to the left achalice-like vessel, per
. Glass. i. MEDIAEVAL TREATISES ON GLASS the ninth century. The manuscript in question, whichis attributed to the year 1023, has been carefully repro-duced by the monks of Monte Cassino where it ispreserved. The full-paged miniature is to be foundin a chapter headed De Vitro; I can, however, discovernothing in the text that throws any light on our the illustration we see to the left a nearly naked work-man who holds a mass of some green material, perhapsthe frit; another man is blowing through a tube what isprobably meant for the unfinished cup; to the left achalice-like vessel, perhaps the model, is depicted. Notice,too, in the pediment of the roof (probably to be regardedas the annealing oven) a cup with a knob for stem, andhemispherical foot. Cups of a similar form, apparentlyin these cases of metal, are found in other illustrationsof the manuscript (Plate xix.), M. Berthelot has reproduced in his earlier work {LaChimie des Anciens) several rough pen-sketches of theapparatus used by
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