M. Bessel on the Declination of the principal Fixed Stars. 83 



bellato subpedali nudo, medio et superne subbibracteo- 

 lato, umbella repetito-trichotoma, seu trifida corollis 

 fere ut in Cot. orbicidari, at pallidioribus." Wherefore 

 the specific ngme of coruscans, being one that misleads, 

 is here changed to that of 

 canalifolia. C. (channel-leaved farinose.) 



rhombifolia. C. (rhomb-leaved farinose) farinoso-alba : foliis 



9. approximatis obovato-rhombeis mucronatis : caule ra- 

 moso valido decumbente. 



Habitat C. B. S. G. ^ . 



Communicavit amicus Parmentier A.D. 1823. 



Obs. Cotyledoni hemisphaericae proxima at magis 

 ramosa, longe humilior, foliis minoribus superne non 

 ampliatis in arcum, sed rhombeis, magisque acumina- 

 tis; margine a medio ad apicem (cum mucrone) ele- 

 ganter (aere aperto) purpurascentibus. Flores non vidi. 



Classis et Ordo. Dodecandria Trigynia. 

 Euphorbia, Linn. Sj'C- 



grandideiis. E. (rosy-spined triangular) aculeata erecta: 



10. ramis simplicibus triquetris marginibus grandidentatis, 

 dentibus bispinosis, spinis validis divaricantibus. 



Habitat C. B. S. ubi invenit assiduus Bowie. G. H. ^ . 

 Viget in Regio Horto Kewense. Erecta firma (nunc 

 bipedalis), aetata teretiuscula, ramis simplicibus con- 

 fertis in superiore parte plantae, at mox forte deciduis. 

 Aculei validi subdivaricantes la^te rosei (morientes ni- 

 gri) subbilineares infra foliolos orientes. Foliola ut in 

 affinibus exigua, plana subtriangularia sessilia viridia 

 lineam longa. 



Species insignis, locanda pone E. lacteam. Flores 

 non vidi. 



IV. On the Declination of the principal Fixed Stars, as ob- 

 served at Greenwich in the Year 1822. Bi/ Professor 

 Bessel*. 



''■"'HE degree of perfection obtained by the observations at 

 •*■ Greenwich, from the plan (adopted since 1821) of ob- 

 serving with the mural circle not only the stars themselves, 

 but also their reflections from a horizontal surface, makes an 



* From Schumacher's Astronomischc Kachrichtcn, No. 't'.i. 

 Vol. GG. No. 327. .hdy 1825. E exact 



