376 Scientific Intelligence. 



Mimosas, this region might, perhaps, deserve the name of the region of 

 Cassias and Mimoias. 



Abyssinia probably forms a distinct region, as the high land has such a 

 different climate. 



XXII. The Islands in the South Sea, which lie within the tropics, form, 

 perhaps, a separate region, though with but a small degree of peculiarity. 

 Among 214 genera, 173 are found in India ; most of the remainder are in 

 common with America, for instance, Chiococca, Weinmannia, Guajacum. 

 Of species, they have, in common with Asia, Zapania nodiflora, Kyllingia 

 monocephala, Fimbristylis dichotoma, Tournefortia argentea, Plumbago 

 Zelanica, Morinda umbellata, Sophora tomentosa; with America, Dodonwa 

 viscosa, Sapindus Saponaria ; with both, lihizophora mangle; and also 

 some in common with New Holland., as Daphne Indim. Peculiar fami- 

 lies, or such as have there a decided maximum, can scarcely be given ; 

 though, on the other hand, most of the species are peculiar. The Bread 

 Fruit belongs to their characteristic, though this tree is not altogether 

 peculiar to the South Seas. , 



Art. XXXII.— SCIENTIFIC INTELLIGENCE. 

 I. NATURAL PHILOSOPHY. 



ASTRONOMY. 



1. Hansen's Parabolic Elements of the second Comet of 1825. The fol- 

 lowing elements of this comet have been computed by M. Hansen of See- 

 berg. 



Mean time. 



Passage of Perihelion at Naples, 1825, - - Dec. 10th. 4192 

 Leg. of Perihelion Distance, - .... 0.092836 



Long, of Nodes, 215° 42' 28" 



Long, of Node mean that of Perihelion, - 256 57 21 



Inclination of Orbit, - - 33 27 40 



Motion Retrograde. 



Zach's Cor. Astron, vol. xiii. p. 3?6. 



2. M. Capocci's new elements of the Comet of 1825. In our last Num- 

 ber, we gave Capocci's first elements of this comet. The following are his 



corrected ones, — 



Mean Time. 



Passage of Perihelion at Naples, 1825, - Dec. 10th. 601 



Log. Perihelion Distance, 0.0930643 



Long, of Perihelion, .... 318° 44' 26' 



Long, descending Node, - - - - 35 43 51 



Inclination of Orbit, 33 30 29 



3. Pons and Capocci's Observations on the tail of the second Comet of 

 1825. This comet has been observed by M. Pons every day from the 



