134 



baker's north YORKSHlR:fe:. 



Polygonum viviparum 

 Salix phylicifolia 

 Habenaria albida 

 Elyna caricina 

 Carex capillaris 

 Sesleria carulea 

 Poa Parnellii 

 Allosorus crispus 

 PolypodiiDH calcareuvi 

 Asplenium viride 

 Equisetum varlegatum 



Cynodontium Bncntoni 

 Dicranum falcatiim 

 ,, fuscescens 

 Hedwigia ciliata 

 Grimmza torquata 

 Racomitrium protensum 

 Ulota Drummondii 

 Amphoridiiwi Mougeotii 

 Bryicvi crudum 

 ,, alpinum 

 Zieria julacea 

 Tetraplodon innioides 

 Andrecza alpina Pis si dens osniimdoides 



Rothii Orthothecium intrlcatuvi 



petrophila Hypnum Crista-castrensis 



Gymnostomum rupestre ,, exannulatum 



microsto7num Plagiotheciiim pulchellu7n. 

 Blindia acuta 



Opposite Cronkley the Tees receives a considerable stream 

 from the north, which is called Langdon Beck, Immediately 

 below the "mouth of this is the bridge by which access is 

 obtained to the Yorkshire side of the river from the high road 

 between Middleton and Alston. When the stream is low it is 

 just possible to wade across it in this part, but under ordinary 

 circumstances the attempt is not to be recommended. Below 

 the bridge the river again sweeps round to the foot of the York- 

 shire fells, and upon the Durham side we have a repetition of 

 Falcon Glints upon a smaller scale in Force Garth Scars. On 

 the south side of the Tees the little stream of Blea Beck forms 

 a narrow steep glen through the Basalt, leaping from ledge to 

 ledge, and overhung with moss-covered rocks, the brown moors 

 sweeping from it on either side. And then comes the High 

 Force. Here the main stream of the Tees, its waters contracted 

 often into a single deep narrow channel, makes a sheer leap of 

 sixty-nine feet into a noble ravine, the cliffs of which margin the 

 stream for a considerable distance below it. The cliff is dark 

 coloured basalt, resting immediately upon dark coloured indu- 

 rated shale, with limestone below it, and when the stream is full 

 the water flows upon both sides of the massive angular crag 



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