48 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 76 



This is the only photograph of a lunar eclipse ever taken by this 

 method, so that we have no similar data about the form of C on the 

 north side of the shadow center. If we suppose that C is oval, with 

 the point of the oval northward, then Rudaux's statement (127), 

 that the center of darkness, 1895 III 10, was displaced northward 

 from the geometrical center of the umbra, is seen to agree well with 

 this photograph. 



Thanks are rendered to Rev. J. H. Metcalf, for permission to use 

 the original negative ; and to Dr. Shapley, for having it suitably 

 marked, and for conferences regarding its interpretation. 



The photograph for figure 2 was kindly loaned by Popular 

 Astronomy. 



Additional Note. — After reading proof, I learned that another photograph 

 of the lunar eclipse of 1909 XI 26 was made at the Harvard Observatory, with 

 the 8-inch Draper telescope. A print (kindly handed me by Prof. E. S. King) 

 might easily be taken for a reduction to Yi size of Rev. Mr. Metcalf 's photo- 

 graph. It was at his suggestion and by his method that this photograph was 

 taken.— W. J. F. 



Table 7. — References for Table i 

 i860 II 6 



1 N. Pogson, Mo. Not. Roy. Astr. Soc, 20, p. 218, 1859-60. 



2 J. F. J. Schmidt, Astr. Nachr., 52, pp. 233-234, i860. 



3 M. Ward, Recreative Science, i, pp. 279-283, i860. 



1862 XII 5 



4 Cantzler, Heis Wochenschr. f. Astr., Met. u. Geog., n. s. 6, pp. 84-86, 1863. 



5 H. d'Arrest, Astr. Nachr., 59, p. 92, 1863. 



1863 VI I 



6 T. W. Backhouse, Astr. Reg., 19, pp. 143-144, 1881. 



7 Bird, Les Mondes, 2, pp. 385-386, 1863. 



8 W. Noble, Mo. Not. Roy. Astr. Soc, 23, p. 251, 1862-3. 



9 Tempel, Les Mondes, i, p. 511, 1863. 



1865 IV II 



10 D. A. Freeman, Mo. Not. Roy. Astr. Soc, 25, p. 273, 1864-5. 



11 F. Hoefer, Cosmos, (2) i, pp. 428-429, 1865 ; Astr. Reg. 3, pp. 169-170, 1865. 



1865 X 4 



12 Cantzler, Heis Wochenschr. f. Astr., Met. u. Geog., n. s. 8, pp. 356-357, 1865. 



13 C. Flammarion, Cosmos, (2) 2, p. 398, 1865. 



14 W. De la Rue, Mo. Not. Roy. Astr. Soc, 25, p. 276, 1864-5. 



1867 IX 3 



15 A. Brothers, Proc. Manchester Lit. and Phil. Soc, 7, pp. 52-54, 1867-8. 



16 J. Browning, Astr. Reg., 5, p. 217, 1867. 



17 H. Ingall, Astr. Reg., 5, p. 240, 1868. 



18 H. J. Slack, Intellectual Observer, 12, pp. 226-227, 1867. Annual Encyclo- 

 pedia, 1867, p. 65. 



