Mr Bon on Coheacecc, a New Family of Plants. 109 
49. 17 Dragon. R. Asc. 16"' Bed. 53° IT N. 
5th and 6th Mag. 
Sir W. Herschel found the angle of position to be S4° S. Foil. ; 
and, in 1819, Struve found it 26° 10'. The difference of right 
ascension was -}- 0" 419 ; the difference of declination, 1" 85 ; 
and the distance 4" 19. 
50. 43 Hercules. R. Asc. 16^ 37'. Bed. 8° 55' N. 
4th-5th, and 9th-10th Mag. 
Sir W. Herschel says that these stars are nearly of equal 
magnitude, and that the distance is about 12''. M. Struve 
found, in 1819, that the difference of right ascension was —4" 15; 
the angle of position 39° 7' S. preced. ; whence the distance is 
1' 23".7, and the difference of declination, — 53".5. If Sir W, 
Herschel observed the same star that Struve did, one of them 
must be variable, and their motion prodigiously great 
51. 4Q Hercules. R. Asc. 16^^ 38'. Bed. 28° 42' N. 
6th-7th and 11th Mag. 
Angle of position in 1783.1, 66° 36' S. Foil. Herschel. 
1802.7, 76 18 Ditto. 
1819.7, 81 12 Struve. 
{To he continued.) 
Art. XV. — Observations on a new Natural Family qf Plants, 
to be called Cobeacere^. By Mr Bavid Bon, Assistant- 
Secretary to the Linnean Society, Corresponding Member of 
the Wernerian Natural History Society, &c. 
It not unfrequently happens that the most common plants 
are those which are the least understood, in a botanical point of 
view. The objects which have already become familiarized to 
our eyes seldom attract our attention, and the weeds which we 
trample under foot are heedlessly passed over as unworthy of our 
examination. These remarks are applicable to a great many of 
our most common plants, and to one of those, which I am about 
to describe, namely, Cohaa scandens, which adorns our garden^ 
• Read before the Wernerian Natural History Society, 26th April 1823. 
