Editing Edward Sabine (section)

==Leave of absence==
On 31 December 1827 he was promoted 1st captain. Between 1827 and 1829, the [[Arthur Wellesley, 1st Duke of Wellington|Duke of Wellington]] granted Sabine general leave of absence from the army<ref name="DCB"/> on the understanding "that he was usefully employed in scientific pursuits". He acted as one of the secretaries of the Royal Society. In 1828 he was appointed a scientific adviser to the Admiralty, following the abolition of the Board of Longitude.<ref name="DCB"/> But his leave from the army did not last very long. Political agitation in Ireland necessitated an increased military presence in the country and in 1830 Sabine was recalled to military duty. He remained in his native land for the next seven years, but he did not allow his new military duties to interrupt his scientific endeavours. He continued his pendulum investigations and in 1834 commenced a systematic magnetic survey of Ireland—the first of its kind in what was then the [[United Kingdom]]. It was extended to [[Scotland]] in 1836 and to England the following year.