Hope this helps
Gas Lighting in London - Timetable
1800 - The Lyceum theater is lit by gas. (probably oil gas)
1807 - 28 January Pall Mall is lit by gas - the first street of any city to be gas lighted
1807 - Golden Lane Brewery and a portion of Beech and Whitecross streets receive gas.
1810 - Ackermann's shop lighted by gas.
1812 gas Light and Coke company of London
1813 - Westminster area receives gas lighting and seven residential customers get it to, from the Gas, Light & Coke Company.
1814 - Piccadilly gets gas lighting. In April, the Parish of St. Margaret's, Westminster, is lit by gas.
1817 - London theaters lit by gas.
1827 - London clock faces get lit by gas {
http://www.cad.co.nz/~awoodley/industry/gas.ht ml}
In 1628 Harvey formally presented his findings in his publication - Anatomical Essay on the Motion of the Heart and Blood in Animals, in which he explained his methods and gave an accurate account of how the circulatory system functioned.{
http://www.zephyrus.co.uk/williamharvey.html}