Memoirs . O—V ? ~N North North Memoirs American Academy of Arts ano Sciences. Vol. XIV. No. IV. PLATE VIII ft m ° T HYDRAE 8 , -8 46 (1900)Yerkes negative, 1908, April 3. Scale, 1 mm = h m ° T VIRGINIS 12 , -5 29 (1900) Yerkes negative, 190S, Jan. 8. Scale, 1 mm = 20 3 • • • —J H —G • • , —u•r-° -c —T —D?- F ®—V- •—A . • —S •—B . —K —M —E—O - -L -P N , • . North. North S VIRGINIS 13 , -6 41 (1900)Yerkes negative, 1919, April 28. Scale, 1 mm = RR LIBRAE 15 ,-18 1 (1900)Yerkes negative, 1909, July 16. Scale, 1 mm =

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