Scientific Intelligence, — Botany. 39S 



brushwood is extremely thick and tangled over the whole plain ; 

 bramble and j uniper bushes grow in irregular patches over its 

 whole extent ; and the crowberry, whortleberry, cranberry, dog- 

 moss, and wood-sorrel, are very abundant. Ferns, of great size 

 and strength, also grow under the shelter of these rocky masses, 

 and by insinuating their roots, perhaps sometimes hasten the dis- 

 solution of their protector. The rock is itself generally coated 

 with large lichens, of green, purplish, and yellow colours. In 

 the neighbourhood of this plain the rocks are granitic, contain- 

 ing a large proportion of mica, and exhibit a slaty structure ; 

 but the blocks which were, strewed over this extensive plain were 

 not, so far as I remember, characterized by stratified appear- 

 ance. They are extremely coarsely gi-ained, of a brownish co- 

 lour, and contain a large proportion of mica. — Mr Alan Steven^ 

 son. 



15 . Localities of rare British Plants. — Chrysocoma Linosy- 

 ris, I gathered in 1824, near the road-side between Brighton 

 and Shoreham. Orohus tuberosus /i tennifolius, near Blanch- 

 land, Northumberland, 1820. Chenopodium botryo'ides^ near 

 Newhaven, Sussex. Eqiiisctum variegatum, in wet sandy spots 

 on the banks of the Tees, near Middleton in Teesdale, Durham, 

 1829. Eriopliorum pubescens and angustifolium are both abun- 

 dant in the same neighbourhood. Jungermanma coclilearifor- 

 mis, near the head of Waskerly Burn, near Wolsingham, Dur- 

 ham, 1829.— ir. a T. 



16. Dimensions of a Larch Tree, cut doztm at Wallington, 

 Northumberland, May 1831 — 



At the base 



... 5 feet 



... 10 ... 



... 20 ... 



... 30 ... 



... 40 ... 



... 60 ... 

 ... 60 

 ... 70 

 88 



extreme length 

 JULY — SEPTEMBER 1831. 



