86 



K. TSUKUTA. 



To obtain minor cyclic curves on the " off" branch of the main, 

 the following" observations were made on the same wire. This und 



the above experiments were carried out on different days, so that they 

 are not to be combined into a series. 



We have here three minor cycles (8—11 — 8), (4—11 — 4), and 

 (1 — 6 — 1), which are shown in Fig. 11, PJ. II. They are, again, so 

 chosen as to correspond to the distinct stages on the "off" branch, 

 one on the right and two on the left of the minimum point, In the 

 first cycle, again the effect of the hysteresis seems to be very small, it 

 being borne in mind that the readings taken were always such that 

 there were as many which gave representative points lying on one 

 side as of those which gave points lying on the other side of the almost 

 straight mean courses of the curve. The cycle (1 — 6 — 1) has exactly 

 the same features as the one (0 — 6 — 0), Fig. 10, on the " on " branch, 



