OBSERVATIONS OF LUNAR OBJECTS. 



247 



S.E. border from spot No. 4, has, under very favourable circumstances, been 

 seen by two independent observers at two different epochs as separate streaks 

 radiating from spot No. 4 (see fig. 15, p. 285). TJiird, the N.W. portion of 

 Plato, containing spots Nos. 13, 19, 16, 33, and 35, and characterized during 

 the period of the observations by greater alternations of brightness and changes 

 in the forms of the streaks than obtained on any other part of the floor. 



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ill.'---- L;=nT 



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Enumeration of Streaks. 



Soufh-ivest area. System S.W. of the fault crossing Plato. 

 a. The trident, very rarely seen complete (see figs. 5, p. 252, 6 and 7, p. 254) 

 (. The S.E. arm of trident, its apparent origin spot No. 1 . 



