OBSERVATIONS OF LUNAR OBJECTS. ^^ 



1870, September 9. Mr. Elger recorded No. 5 faint, 17 especiially faint^ 

 14 and 22 glimpsed, and 14 difficult. 



Interval 168 hours to ileridiau Passage. 

 1870, June 13. Mr. Gledhill has this remark: "For some time I have 

 thought that when power 115 was used, spot No. 4 was almost at any time 

 to be seen, or at any rate a condensation of the ' sector' at its apex was 

 seen. On ajiplyiug 240, however, the appearance vanishes, and no con- 

 densation or spot is seen, or perhaps only sometimes and at intervals." 



Interval Meridian Passage to 168 hours. 



1870, July 13. Mr. Gledhill records No. 1 as very bright. 



1870, September 10. Mr. Elger records Nos. 2-5 and 16 as easy, No. 14 

 as seen by glimpses. 



Interval 168 to 156 hours. 



1870, August 12. Mr. Neison records "a spot seen on the border of No. 

 3, very small and hardly visible except at intervals, but pretty bright on 

 edge only of the light marking." Mr. Neison suspected it to be No. 31, 

 which it undoubtedly is according to the position which he has accorded to 

 it on the diagram. Mr. Neison was the only observer who detected No. 31 

 during this lunation, on the 10th and 11th of August, as an elongation of 

 No. 3. Mr. Elger, Mr. Gledhill, and ili-. Pratt appear to have missed it. Query, 

 was the groixp Nos. 3, 30, and 31 in greater activity about this time ? 

 Mr. Neison has this note, " 3. Faint indications of its being a crater very 

 distinct." Mr. Pratt records: "During the long period since I last saw 

 the light streaks I have had little opportunity to study former sketches, and so 

 was free in a measure of the bias of them. Yet on sketching those seen, 

 the forms, positions, and directions coincide with former drawings, notably 

 the trident a, /S, rj, I." Mr. Pratt also notices a remarkable increase in 

 brightness of spot No. 22, so as to attract especial attention. Neither 

 Messrs. Elger, Neison, Ormesher, nor Gledhill noticed this spot, although 

 they were observing on the same evening as Mr. Pratt, who further re- 

 marks " that in moments of best definition the area comprised between 

 Nos. 19, 1, and 4 was not nearly so well displayed as the rest of the floor, 

 giving a strong impression of an obscuring medium located there." [This 

 observation of the streak 1, the existence of which has been questioned, is 

 perfectly independent of any suspicion of its non-existence, as it occurred 

 some months before the question was raised.] 



1870, October 10. Mr. Elger found spot No. 5 on the E. edge of the E. 

 arm of the "trident;" its position, as given by Mr. Pratt, is on the W. 

 edge of the E. arm. He also found that Nos. 5 and 14 were far inferior 

 to 17. Spot No. 25 was easy. Mr. Elger did not see spots Nos. 9, 11, 18, 

 23, nor 30 recorded by Mr. Gledhill, nor did Mr. Gledhill see No. 14. For a 

 special note on the position of spot No. 5, which Mr. Elger also saw on the 

 E. edge of the " trident" on May 13, 1870, see Interval 132 to 144 hours. 



1870. On the 12th of August, and on September 7, 11, and 12, Mr. 

 Neison made a series of observations with apertures varying from 4 to Sc- 

 inches, with differences of 5 of an inch. 



Inches 4 4| 4^ 4| 5 5;^ 



Spots 4 4 5 5 6 7 



The spots seen were Nos. 1, 3, 4, and 17 with 4 and 4| inch apertures, the 

 game and No. 6 with 4| and 4f ; with 5 inches aperture spot No. 14 was 

 detected and marked as faint, and with 5| inches No. 16 was discerned: 



g2 



