Show measuring sleep fler sons differ vey very ve y greatly in theli theft mode of slumber r some attakan HI at the slightest noise ottille title others aire only aroused nith difficulty the thet t differences differ enes have been carefully carp fully lessl fled by scientists when scientist speak of liow how fint a person peron per on they mean liow flow deep Is his steel not only Is it possible tt to measure sleep hut but there are different of alne aing so one Is by drop drippin pin a steel hull ball the dill u ill Is dropped at increasing four six cleir ten twelve indies und so on u aunill n I 1 I 1 the hie sleeper lleeper becomes conscious of the sound and ailena lahens in thlu ills ia cju cau find out how deep was ills his sleep ancier method la Is to ro touch lie file sleeper with an wire noting the Iti liitt bally of the cl cur ir lent i nt used |