. out a sacrifice of accuracy. square of the pattern and finds that it forms part of the BT WILLIAM B. OAHBLB. This is a convenient place briefly to mention the groundwork of the design ; that is to say, no portion The assayer's first operation consists of a thorough scales used in assaying. There… … two or three inches in milligrammes is the pro- THE ASSAIINe OS GOLD AND SILVEB OitiiS. thickness, composed of
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