The Mentor · Stained Glass · Page 7

along the heated line. The rough edges were next trimmed with a "grossing" iron. Later on, the diamond point was used to cut glass; now it is done by means of a steel point.
Leading a Window In our day, as in olden times, when the pattern has been drawn and placed on a large table the workman selects glass and cuts it to fit each large or small space; after these have been painted and fired they are fastened together by means of lead in long narrow strips having grooves on each side, and soldered at the joints. Afterwards, cement is pushed into any crevices that might let water pass through the joint of the glass with the lead, and thus the whole is made perfectly water-tight.
The process of silver staining consists of

"ST. GREGORY" (15th c.)
All Souls' College,
Oxford, England

painting white glass with a preparation of silver, either oxide or chloride. When fired in the oven the glass becomes stained a very indelible yellow, varying from pale lemon to deep orange according to the strength of the painting.

Thirteenth-Century Glass The thirteenth-century glass made to decorate the early churches in England resembled closely that of France, as the few remaining windows of that period clearly show.
The series of medallion windows made for the choir of the Cathedral of Canterbury rivaled in richness of color those made for the very old cathedral in Sens, France. Many of them repeat the same scenes and it is supposed they are from the same drawings, since glass workers were brought