Experiments made to determine the temperature co-efficients of Watson's magnetographs . 10 A W ^•\ ~=^ \ \. A B C \ 13 14 15 16 Tu-s Time Scale. NOTE.—A=H. F. Thermometer B=Thermometer on table C=Thermometer near H. F. tube The number inside the circle is the Serial No. of the experiment. Magnet 3 Fibre 4I, 10th Feb. 02. 1^ 1 ?40° ?35 ^-^ -30° o •-^ g CQ - ft - S V H — of 1-20 ..^ \. V «-ay ?Jij-s 7 C - Curve sUp II 1! T Y ?Knie Scale Feb. 02. 12 13 14 _^ iPncorrected Curve16 Tirs -40° o -35 -30° -25° ?20° ^ \c ^ > /

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