SIM – Plate 36b
Plate 36, Fig. 69, the same experiment carried out the following day between10 p.m., 29th September and 2 a.m., the 30th September. The substances did not rise as high as on Michaelmas Day, but they reach the same level as on the previous night between the 27th and 28th September. The picture even looks very similar to the one obtained before Michaelmas Day. There is the same vigorous formation of arrows, the same background strongly coloured by Iron sulphate; the upper part of the picture is mostly yellow with fine lines of silver grey interwoven.