Nature's laws must be obeyed, and the period of decline begins, and goes on with accelerated rapidity.

clx. Regular work with this instrument inaugurated at Kew by De la Rue in 1858 was carried on there for fourteen years; and was continued at the Royal Observatory Greenwich from 1873 to 1882.

Warren De la Rue (18 January 1815 – 19 April 1889) was a British astronomer and chemist most famous for his pioneering work in astronomical photography.