Stars and telescopes; a hand-book of popular astronomy, founded on the 9th ed. of Lynn's Celestial motions (1899)
Todd, David P. (David Peck), 1855-1939, Lynn, William Thynne, 1835-1911. Celestial motions · Boston, Little, Brown and company · leaf 98
nch= 12 feet Also at Meudon, Paris, M. Janssev has had extraordinarysuccess in photographing the Suns surface in detail; its gran-ulation, sharply defined in his originals, is somewhat blurredin the reproduction on page 62. In viewing the Sun with atelescope this granulation can be satisfactorily… … < 62 Stars and Telescopes which was total in Switzerland in 1706.18 It was longcontested whether they belonged to the Sun or to the average sun-spot period of n£ years, there are great irrregu-larities: the intervals between maxima have varied from 8 to15I years, and between minima from 9 to 14…
Astronomy
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