132 Scientifie Intelligence. 
IV. Botany. 
60. Number of Known Plants as given by Different Authors since 
Theophrastus, together with the supposed Total; by R. B. Hinp, (in 
Geographic Botany, Ann. Mag. Nat. Hist., xv, Jan. 1845, p. 12.) 
Known. —— 
A. C. 800, THeorurastus, History of Plants, 
A.D. 70, Puny, History of the World, . 2 1,000 
1580, Dopvonzvs, Stirpium es : : 1,330 
1623, Banain, ae : : J 6,000 ' 
1690, Ray, ; : ; ; ‘ 18,000 
TOURNEFORT, . ; 6,000 
1753, Linn zus, Species Plaats, Ist Ba 7,300 
1762, 2d ed., 8,800 
1796, Gmetin, Systema zat - 16,635 
1806, Persoon, Enchiridium, . . 27,000 
Humsorpr, .. . 44,000 
1814, Brown, Flinders’ Veyaige? : . 37,000 
1820, De Canpotiz, Théorie Elémentaire,. 50,000 100,000 
1824, rodromus, : - 50,00 
1827, SpRENGEL, : ; : ? y “FIO 
1830, Batsi, Geographie, . ; 80,000 
1835, Linp.ey, Introduction to Boultiy: : 86,000 
1845, R. B. ethic (supposing, forreasons rors ma states, Y 194.000 
that one third yet remains to be discovered, } on 
Mr. Hino gives the following as their probable Siiindtions 
F uare Miles. 
WO ii te 6 io hile et ann LO 2,793,000 
bi oa kina: Se ae ah 4 OO 12,118,000 
ese bred ak the agin aun, SOOO 8,500,000 
North America, . ‘ ; ; : 14,400 
South America, ; i aes ‘ : 40,000 canis hie 
Australasia, Ee Ran. 7,200 _ 8,100,000 
134,000 37, 87,657; 000 
61. acide disease, (L’Institut, xiii, ann. 1845, pp. 325, 328, 343.) 
—The origin of this disease is traced by M. Payen, as has been done 
= others, to a cryptogamic vegetation propagating within the tubes. 
The fungus, whose spirules have followed the liquids infiltrated about 
¢ cortical parts especially, and sometimes the axis, develops in the 
les minute anastomosing filaments, which are nourished by the oily 
nts and enclosed fecula. Passing from one cellule to another; 
the whole together so that the texture is not destroyed at the 
nt. The fibres growing outward towards the exterior sur- 
