Scientific Intelligence. 367 



Hooker's Exotic Flora. Part 19. February 1825. 



Tab. 142. Dendrobium album, n. sp. from Jamaica, " bulbis ellipticis 

 compressis apice uni-trifoliis, pedunculis unifloris erectis, petalis sublan- 

 ccolatis, labello oblongo obscure trilobo, medio tuberculo oblongo car- 

 noso." t. 143, Bromelia nudicaulis, L. t. 144, Hoscoea purpurea, Sm. 

 t. 145, Habenaria orbiculata, (Orchis, Ph.) t. 146, Impatiens fimbriala, 

 Colebr. MSS. " racemo terminaH capitato, foliis ovali-lanceolatis acumi- 

 natis longe ciliatis, nectario corniculato florem excedente ; bracteis pul- 

 cherrime ciliatis." 



Fart 20. March. 



Tab. 147. Parkeriapteridoides, anew genus of plants, allied to the true 

 Ferns. It has the habit of Pteris, or rather Teleozoma of Brown, but 

 has tbe capsules quite destitute of annulus. It was gathered in Guiana, 

 by Charles Parker, Esq. after whom the genus is named, t. 148, Pachy- 

 sandra ? coriacea, a remarkable plant of the family of En phorbiaeecp. 

 t. 149, Anisopetalon Careyanum, a singular new genus of Orchideous 

 plants, sent from Nepal by Dr Carey to the Liverpool Botanic Garden. 

 t. 150, Cuscida rejlcxa, Roxb. var. /?• verrucosa. 



Art. XXX.— SCIENTIFIC INTELLIGENCE. 

 I. NATURAL PHILOSOPHY. 

 ASTRONOMY. 



1. Comet of July and August 1824 discovered at Paramatta. This 

 comet was discovered at Paramatta by our countryman Mr Dunlop, and 

 the following elements have been computed from Mr Dunlop's observa- 

 tions, (as communicated to us by Sir Thomas Brisbane,) by Mr George 

 Innes and Mr Gordon of Aberdeen. The observations themselves will 

 appear in the Edinburgh Transactions, vol. x. part ii., now in the Press. 



Mr limes. Mr Gordon. 

 Time of Perihelion Passage, ) 



„, „■ ,„ t , J July 10th 10 h 17'30" 10" 17' 41" 



Mean Time at Paramatta, ) ' ' ' 



Long, of Perihelion, - 259° 45' 32" 259° 45' 31" 



Long, of Ascending Node - 330 29 8 330 29 8 



Inclination of Orbit - 57 3G 57 36 



Perihelion Distance - 0.595C114 0.5956147 

 Motion retrograde. 



2. Comet of September 1824 discovered at Paramatta. In our last 

 Number, p. 177, we gave the elements of the comet which was discover- 

 ed by Mr Rumker, as computed from his observations by a Correspon- 

 dent. 



The following elements, differing very little from those previously given, 

 have been computed from Mr Rumker's observations, (as communicated 

 to us by Sir Thomas Brisbane,) by Mr George Innes and Mr Gordon of 

 Aberdeen : 



