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Published online by Cambridge University Press: 16 March 2015
The conclusions of this paper are derived from observations made at Makerstoun in Scotland; Toronto, Canada; Trevandrum, Travancore, and Singapore, East Indies; St Helena, the Cape of Good Hope, Hobarton, Van Dieman's Island, &c. The author has corrected and discussed all the observations published made in the colonial observatories.
The observations have been found affected by different errors, and frequently the series have been broken. An attempt has been made to correct these series; and, in general, to render the series as near the truth as possible. The grounds for all these corrections are given in an appendix.
page 407 note * Some observations examined were found valueless, on account of errors which could not be corrected; and in one case the requisite data for accurate correction were wanting.