370 



""' (,e. 352.) >AVhen we scc«, fagt ©ir 3o^u Jptrr fffcel, »in 

 ilie r.o.il-sack (iit-jr a Crucis) a sharply defined oval Space Ircc 

 Irom slars, it would seem much Icss probable that a conical or 

 tubulär hollow traverses thc whole of a slarry Stratum, conli- 

 nuously extended from Ihe eye outwards, than Ihat a distant 

 mass of comparatively moderatc thickness should be simply per- 

 foratcd from side to side « Outlines § 792 p. 532. 



' (S. 353.) Lettre de Mr. Hooke ä Mr. Auzout tu 

 ^en Mem, de I'Academie 1666 — 1 099 T. VII. Partie 2. p. 

 30 Uli 6 73. 



' (©. 353.) Äoönicö a^b. 1. e. 161. 



