Russell began to develop the meteorological side of his work, in 1877 he published a substantial volume,
Climate of New South Wales: Descriptive, Historical and Tabular. In this volume some attention is given to the question of weather periodicity, on which he had written a paper in 1876. In later years he gave a great deal of attention to it. At the beginning of Russell's appointment there were only 12 observing stations in
New South Wales, but before he resigned there were about 1800. There was little money for equipment, but Russell made use of available materials and designed a rain gauge which could be made at a cost of one-sixth of the imported gauges. Russell also invented various self-recording
barometers,
thermometers,
anemometers and
rain gauges. This reduced and made possible the work of his observers, almost all of whom gave their services voluntarily. In collaboration with
Sir Charles Todd of
South Australia, and
Robert L. J. Ellery and
Pietro Baracchi of
Victoria, weather reporting in Australia was co-ordinated until the daily weather forecasts showed a very high percentage of accuracy. The long series of
Meteorological Observations made at the Government Observatory, Sydney, published under Russell's direction contain an enormous mass of information relating to the climate of New South Wales. Russell was interested in the study of double stars and published in 1882
Results of Double Star Measures made at the Sydney Observatory 1871 to 1881. He also gave a great deal of attention to the application of photography to astronomical work. In 1887 he attended the astrographic congress at Paris and arranged for the co-operation of the Sydney observatory. This involved the taking and measurement of 1400 photographic plates. Russell supervised the preparation of the portion of the
Astrographic Catalogue undertaken by the Sydney observatory until his retirement. In 1888 he was elected president of the newly formed
Australasian Association for the Advancement of Science and in 1891 became vice-chancellor of the university of Sydney, but resigned within a year on account of the pressure of his other duties. By 1893 Russell had discovered 500 new
double stars. In 1903 Russell had a severe illness from which he never completely recovered. He had a year's leave of absence and resigned the position of government astronomer in 1905. Russell died at the observatory on 22 February 1907. Russell was for some years president of the
Royal Society of New South Wales, was elected a fellow of the
Royal Society, London, in 1886, and was created C.M.G. in 1890. Russell contributed papers to various societies, many of which appeared in the
Memoirs and
Monthly Notices of the
Royal Astronomical Society. Others papers will be found in the
Journal and Proceedings of the Royal Society of New South Wales, and other journals. He also took an important part in the initiation of technical education in New South Wales. ==Family==