Report on the Eclipse of the Sun August 17th-18th 1868: as Observed at Guntoor under Instructions from the Right Honourable the Secretary of State for India

My.leavy baggage left Guntoor in charge of Sergeant PHILLIPS for Bezwada on the 2nd September; I followed on the 5th; we reached Coconada on the 9th left it on the r7th on the arrival of the steamer and on the 23rd reached Calcutta with the instruments.8 Major TENNANT Report on the Total Eclipse of the Sun. [...] Let A be the initial reading and B the final one ; let m be the number of repetitions involving p whole circumferences and let be the zenith distance (or the mean) ; also let E E be the sum of the readings of the eye end of the level and E 0 the corresponding sum of the object end readings then n=B+zp 7C A + I".1 (EE—EO) which. [...] I therefore had resolved to attend first to the corona lest each of us should have only the same partial tale.20 Major TENNANT Report on the Total Eclipse of the Sun The red and yellow lines were evidently C and D the reading of the green line coincides with that of the brightest line in b instead of the mean of the three lines which I read as a verification ; the line near to F was in all pro [...] One side of the prism cell was marked t and the corresponding side of the tube into which it fitted ; when duly placed the marked side of the prism gave the red and the other the green image when the wire was in the plane of polarization. [...] This was a delicate test of the existence of polarized light and possessed the property of the second test that at 45° from the plane the bands vanished but at the same time the blue and orange tints of the last test became visible.