480 



tt t t t t I t 1 1 I I I I I I Tl LI ! t t f 1 t I t I t f t I I t f I t U I ) 



m 



t f t t I I t t t t i i I T r -f-*-i-i-r -f f' I t f- t I I i-i I I I t I t f f t 



Fig. 4. I. Clinoslat of Pfeffer. Records of half rotations. 



B is the excentric overload converted on the axis. At i this load 

 WHS removed. II. Clinostat of van Harreveld. Record of 1/4 

 rotations. B as above. At | this load -was increased to 2 KG. at 

 which the clinostat stopped ; next the overload was removed. III. 

 Glinostat of de Bouter. Record of half rotations. B. excentric over- 

 load as above. In all 3 figures T is the time-line, checked every 

 6 minutes. 



