Worst, Edward F. (Edward Francis), 1866-1949, Barber, Harriette, [from old catalog] joint author, Seymour, Marian, [from old catalog] joint author · Chicago, A. W. Mumford and company · leaf 260
FIGURE XIX. While performing experiments the test tube holder isquite indispensable. The above shows a very simple way of making one. TRIPOD. … FIGURE XX.257 The little tripod given in the above exercise is made ofstrips of tin Yi inch in width and riveted together with cop-per tacks. The above drawing illustrates the apparatus necessaryin getting the boiling point.
Manual training · Paper work · Basket making
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