NO. 9 BRIGHTNESS OF LUNAR ECLIPSES FISHER 29 



h = 2.6 3.8 cm.; seas, mountains, volcanoes, etc. 



Bougourd, Tunis, (250) ; admirable sky. 

 c:=2.6 7.5 cm.; seas turned notably dark — Maria Nubium, Humorum, Tran- 



quilitatis, Fecunditatis. Not due to any clouds. 



dc Roy, Antwerp, (252) ; breaks between clouds, astronomical twi- 

 light, 

 b = 4.3 4.3 cm. ; the N. W. limb was more easily visible, and the principal 



details of lunar topography were distinguishable, except the Oceanus 



Procellarum. 



Elgie, Leeds, (251); sky not stated; astronomical twilight. 

 c^S.i Although at its first encroachment the shadow was dead black, when 



the disk was fully eclipsed many features could be perceived by the 



n. e. 



Borelly, Marseille, (249) ; sky clear. 

 Comet-seeker; Aristarchus remained visible. Many cirques visible 



in the shadow. 



Zlatinsky, Mitava, Russia, (255) ; excellent atmosphere. 

 c > 18 9.5 cm. ; the lunar details were easily visible in the shadow. 



1909 XI 26; 1.372; Grade 2 



c Antarctic ice, S. Pacific, near Para, N. Atlantic, Lapland, near 



Irkutsk, near Shanghai, Gulf of Carpentaria, near Sydney. 



O'HaUoran, San Francisco, (259) ; moon shone brilliantly, with no 



halo near or distant. 

 c = I.I Many of the markings were recognizable without magnifying power, 



and an opera-glass showed several of the craters. 



Ginori, Buenos Ayres, (257) ; sky most limpid. 

 b = 2.i But when half of the lunar disk was covered, .... the general 



details of the m.oon were then seen easily across the shadow, with a 



binocular. 



Cainpariole, Port-of-Spain, Trinidad, (256) ; sky practically cloudless 

 c = 3.5 2 inch refractor, prism binocular; the parts first covered by the 



shadow appeared very dark, but by the time it had crept over about 



Yz of the bright lunar surface, they began to lighten considerably, and 



the maria stood out well. 



1910 V 22; 1.099; Grade 2 



c Southern Ocean, Antarctica, Cape Colony. 



Cainpariole, Port-of-Spain, Trinidad, (260) ; the condition of the 



atmosphere rendered definition poor, even when the moon was unob- 



scured by clouds, 

 a 1.2b 2 inch and field-glass; the eclipse was one of the brightest I have 



witnessed. Shadow enters Mare Serenitatis .... maria, etc., stand 



out very well. 



1910 XI 16; 1. 131 ; Grade 2 



c Bay of Bengal, L. Baikal, Alaska, Rocky Mts., W. Mexico. 



Amann and Roset, Aosta, Italy, (261) ; sky clear. 



