"معاملات الجمعية الجغرافية في بومباي. من يناير ١٨٦٣ حتى ديسمبر ١٨٦٤. (تحرير السكرتير.) المجلد XVII." [‎١‎٧] (٥٢٤/١٧٨)

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BOMBAY TIDAL OBSERVATIONS FOR 1861. 17
nautical men. The observations should he made subservient to im
provements in the theory of the tides, and if made with sufficient
care, will indicate, I doubt not, the effects of variations in the atmos
pheric pressure—a subject on which we require more information than
has yet been collected. Being within the tropics too, the effects of the
variations in the declinations of the sun and moon might probably be
studied with considerable advantage. The rigidity of the earth has
also recently been suggested as deserving scientific examination, and
for this purpose careful tidal observations must be of great value ;
and though I am not prepared to say that Bombay is very advantageously
situated for this object, still, having a comparatively low latitude,
they might prove of some value.
If all or any of these objects are to be served by the Colaba Obser
vations, I think the Members of this Society will agree with me, that
those already collected must be examined, in order to the rejection of
most, if not all, of those made from the time at which they first became
untrustworthy, and that in future they ought either to be so carried on
as to secure more accurate results, or else dropped altogether.
3