rewéd upon a tripod and adjusted in the ment, and which is formed of a steel plate. ordinary manner. The arrangement is such If P, Fig. 1, represents the point of which as has been already described, that any desired scales can be employed, the conditions regulating the em- the staff is placed… … means of the vernier, ¢, on the vertical scale of 88, Fig. 3. to our dreaded art in order toconquer pulmonary diseases.” In ascertaining the hight of a point, two cases may be consi- until, by using the scale, Z (for fifths and tenths), the read- oO +O Oo BATS are said to be inveterate enemies to…
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