218 Comets. 



Diaptomus similis are all described by Baird. They bear close 

 resemblance to British species. The shells of all were thickly 

 planted, especially about the anterior portion, with Vorticellae, 

 who seemed to take advantage of the currents created by the 

 movements of their hosts. 



COMETS. 



AN ACCOUNT OF AXL THE COMETS WHOSE OEBITS HAVE NOT BEEN CALCULATED. 



BY G. P. CHAMBERS. 

 (Continued from page 255, vol. iii.) 



279. In April a comet near 8 Hydras ; in May another (the 

 same ?) comet near tt Leonis. In August it was situated 

 within the circle of perpetual apparition. — (Ma-tuoan-lin.) 



281 [i.] A comet appeared in September near k Hydras. — 

 (Ma-tuoan-lin.) 



281 [ii.] A comet appeared in December near a Leonis. — 

 (Ma-tuoan-lin.) This might be the same as the preceding. 



283. On April 22 a comet was seen in the S.W. — (Ma- 

 tuoan-lin.) 



287. A comet appeared near //. Sagittarii for ten days. Its 

 tail was 100° long. — (Ma-tuoan-lin.) No month given. 



290. In May a strange star was observed within the circle of 

 perpetual apparition. — (Ma-tuoan-lin.) Whether a comet or 

 only a temporary star is uncertain. 



301 [i.] In January a comet emerged to the W. of ft 

 Capricorni, with a tail pointing to the W. — (Ma-tuoan-lin.) 



301 [ii.] In May a comet was seen near either to Capricorni 

 or 110 Herculis. — (Ma-tuoan-lin.) 



302. In May — June a comet was visible in the morning. — 

 (Ma-tuoan-lin.) 



303. In April a comet was seen in the eastern heavens 

 indicating (i.e., pointing towards ?) i and k Ursoe Majoris. — 

 (Ma-tuo;in-lin.) 



305 [i.] In September a comet was seen in the Pleiades. — 

 (Ma-tuoan-lin.) Under the same date De Mailla places a comet 

 near the Pole. — (Hist. Gen. iv. 248.) This is probably the comet 

 of Ma-tuoan-lin, if we suppose him to speak of the constellation 

 of the Pleiades in mistake for the sidereal division of the same 

 name. — (Hind.) 



305 [ii.] On November 22 a comet was seen in the square 

 of Ursa Major. — (Ma-tuoan-lin.) Hind thinks this is the same 

 as the preceding, but Pingre the contrary. 



