243 REPORT — 1866. 



Area IV A2. 



No. 1. Lat. 5° to 6° S.— 47**, 24*, 49*, 58*, 11, 38, 39, 81, 96, 100, 

 101, 102, 103, 104, 105, 106, 111, 112, 113, 114, 85+. 



No. 2. Lat. 5° to 7° S.— 47**, 24*, 28*, 37*, 49*, 56*, 58*, 60*, 61*, 

 11, 27, 38, 39, 46, 48, 57, 59, 80, 81, 85, 86, 96, 100, 101, 102, 103, 104, 

 105, 106, 108, 109, 110, 111, 112, 113, 114. 



No. 3. Lat. 6° to 8° S.— 1**, 4**, 6**, 7**, 16**, 25**, 29**, 3*, 28*, 

 30*, 31*, 37*, 49*, 56*, 60*, 61*, 11, 1 3, 14, 27, 44, 45, 46, 48, 57, 59, 80, 

 81, 86, 88, 92, 98, 99, 107, 108, 109, 110, 114. 2t, 15t, 18t, lOf, 21t, 

 22+ 9t 20''' 62+ 63"*" 64+. 



"no. 4. Lat 7° to 9°''s.— 1**, 4**, 5**, 6**, 7**, 16**, 25**, 29**, 33**, 

 77**, 3*, 30*, 31*, 32*, 37*, 43*, 61*, 65*, 13, 14, 23, 26, 27, 42, 44, 45, 

 54, 66, 78, 79, 83, 84, 88, 90, 91, 92, 93, 94, 95, 98, 99, 107, 2t, 15t, 

 18t, 19t, 21t, 22t, 76t, 89t, 8t, 9t, 20t, 71+, 62+, 63+, 64+. 



No. 5. Lat. 8° to 10° S.— 5**, 16**, 17**, 25**, 33**, 34**, 36**, 67**, 

 77**, 10*, 12*, 32*, 43*, 52*, 55*, 65*, 75*, 23, 26, 35, 40, 41, 42, 50, 

 51, 53, 54, 66, 68, 69, 70, 73, 74, 78, 79, 82, 83, 84, 87, 90, 91, 93, 94, 

 95, 97, 99, 72t, 76+, 89t, 8i, 9+, 71t. 



No. 6. Lat. 9° to 10° S.— 17**, 33**, 34**, 36**, 67**, 10*, 12*, 52*, 

 65*, 65*, 75*, 35, 40, 41, 42, 50, 51, 53, 68, 69, 70, 73, 74, 78, 82, 83, 

 87, 97, 72t. 



Observations, 



Identification. — The first step is to identify the objects in each pair of 

 subzones, "which may be best exemplified by the following record of observa- 

 tions for this purpose. 



y 



Identification of Objects in Subzones No. 3. Area IV A . 



1866, October 16, 7'' 15" to S"- 30™, G.M.T. No. 500. Day elapsed of the 

 Julian Period (D. J. P.) 2402891, moon's latitude north 4° 54' Apogee + 92^, 

 Perigee —201'', Eoyal Astronomical Society's Sheepshanks telescope. No. 5, 

 2|-inch aperture, po"^ver about 150. 



Definition good, terminator grazing east edge of Ptolemseus. 

 IVA?^ '. Very conspicuous, but outline more circular. 

 4. Quite conspicuous. 

 6. Veiy conspicuous. 

 " 7. Quite conspicuous. 

 25. Its individual character and slight depression discernible, but this 

 telescope appears to bo unable to bring out its features strongly. 



29. Quite easy ; the spur is not so distinct. 



3. Conspicuous, border illuminated, interior filled "with shadow. 

 28. Just perceptible, but not very distinct. 



30. Scarcely discernible. 



31. Just perceptible. 



13, 14 & 15. Not at all distinct, but some indications of the crater-row. 

 27. Just perceptible. It is not very striking, and "o-ould by no means 

 arrest the attention with this aperture and power. 

 2. Not visible -with this aperture nor power. 

 18, 19. Not visible with this aperture nor power. 



21. Not "dsiblc with this aperture nor power. 



22. Not visible with this aperture nor power. 



9. Not visible with this aperture nor power ; the shadows of IV A?^ ' 

 and IV A? 5 project slightly. 



