2T6 Rev. Mr Scoresby on some of the Larvs 



The following are the results of the three series of wires. 



Series A. 



Inductive influence on the soft iron-wires. 



The action of the magnet alone was a deviation of 40°. 45'. 



Out of contact (as Fig. 6 b) 44°13 -— 40^45 = 3!28 



In contact (Fig. 6 c) 51.45 — 40.45 = 1 1.0 



Hence the influence transmitted ) ^. .^ . . ,. „ „„ 



\ 51.45 — 44.13 = 7.32 



from bar to bar, - J 



Series'B. 

 Inductive influence on the wire-drawn steel. 

 The action of the magnet alone was in this series 40°.26'. 



Deviation out of contact, 42. 7 — 40.26 = 1.4l' 

 in contact, 43.19 — 40.26 = 2.53 



Hence the influence transmitted 

 from bar to bar, 



43.19—42. 7 = 1.12 



Series C. 

 Inductive influence on the hardened steel wires. 

 Here the action of the magnet alone was a deviation of 



Deviation out of contact, 4o!47 — 39^52 = 0?55' 



in contact, . 41.20—39.52= 1.28 



Hence influence from bar to bar, 41.20 — 40.47 = 0.33 



Whilst, therefore, in the series of iron-wires, the total induc- 

 tive influences, direct and transmitted, were productive of a de- 

 viation of 1 1°.0', in augmentation of the unaided deviation of the 

 magnet ; the influences in the wire-drawn steel occasioned but 

 2°.53' augmentation, and in the hardened steel only 1°.28'. 



And whilst the direct induction on the iron-wire occasioned 

 an augmentation of 3°.28', that on the wire-drawn steel was 

 1°.41', and on the hardened steel 0°.55'. 



And whilst the transmitted influence produced in the iron- 

 wires a power of augmentation of 7°.32' to the deviation occa- 

 sioned by the magnet alone, the wire-drawn steel produced but 

 V,\9! augmentation, and the hardened steel wires only 0°.33', 



