Philosophical transactions of the Royal Society of London (1666)
Royal Society (Great Britain), United States. Patent Office. Scientific Library, former owner. DSI · London : Royal Society of London · leaf 330
mttolhiiu. Vol.L XY/1.Tah..Y/. … en the Planet Mars. 273 The largeft of the two ftars on which the above obferva-tions were made cannot exceed the twelfth, and the fmalleft thethirteenth or fourteenth magnitude; and I have no reafpn tofuppofe that they were any otherwife afFe£ted by the approachof Mars, than what the brightnefs of…
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