150 PKOFS. LLOYD MOKGAN AND KEYNOLDS ON THE [May I9O4, 



No cornute Zaphrentids were found, and the probability is that the 

 beds belong to Group B. On the whole, therefore, evidence again 

 points to the conclusion that the volcanic rocks here too occupy 

 approximately the same position as those at Spring Cove and 

 Middle Hope. That there is a strong fault between the Kewstoke 

 rocks and those in the quarries on Milton Hill, so as to thrust up 

 the former beds to their present position, is certain. And this 

 is in line with the facts already noted under the head of ' Spring 

 Cove.' 



(4) At Uphill. 



We have not been successful in obtaining many fossils from the 

 limestones above and below the ' trap ' here. We submitted, 

 however, a number of fragments to the etching effect of weak acid, 

 partly with a view to the disclosure of auy lapilii which might be, 

 but were not, present. Mr. Vaughan kindly examined some speci- 

 mens from below the ' trap.' He says : — 



' I am convinced that the Uphill specimens denote beds on the level of the 

 tipper portion of the Black-Rock Quarry, and therefore on exactly the level of 

 the Woodspring specimens. Zaphrentis Phillipsi, M.-Eclw., a bisulcate Spirifer, 

 and small cylindrical crinoid-stems are the only fossils to be seen. Of these, 

 Z. Phillipsi ranges from the middle of Press's Quarry (just below the Black 

 Rock) to the Campophy Hum-beds (B) at the top of the Black Rock ; but its 

 main development is at the top of the Black Rock (never above). Bisulcate 

 Spirifers in isolated examples (as here) point to the same horizon (or very much 

 lower, which is rendered impossible by the associated Zap lire litis).' 



As before noted, there is here no distinct evidence of the con- 

 temporaneous origin of the ' trap.' But the palaeontological evidence 

 that it occurs at the same horizon as the Middle- Hope and Spring- 

 Cove lava, makes its volcanic nature, as a submarine outflow at any 

 rate, highly probable. 



(5) In Goblin Combe. 



(a) Easterly exposure. — Possils taken from a level about 

 100 feet above the mural exposure of breccia and tuffy limestones 

 contain Chonetes papilionacea, Phill., Streplorliynchus crenistria, 

 Phill., Athyris Royssii, L'Eveille, and Spirifer cristatus (var. octo- 

 plicatus, Sow.). These, in Mr. Vaughan 's opinion, mark the lower 

 part of Group C, and are therefore in exactly the same relative 

 position as at Middle Hope and at Spring Cove. There is no ex- 

 posure immediately beneath the volcanic rocks ; and the level of the 

 rocks, just west of the orchard, cannot be readily calculated, as the 

 dips are changing near the summit of the anticlinal arch. These 

 beds, which may lie 100 feet or so below the tuffs, contain 

 Zaphrentis Phillipsi, M.-Edw., Z. Enniskilleni, M.-Edw., Z. sp. nov. 

 (* the very commonest,' says Mr. Vaughan, ' of the Zaphrentids of 

 Clevedon, also found in the Avon section, Tytherington, etc., but not 

 yet figured or described'); also a specimen of Spirifer aff. elathratus, 

 M'Coy (small and presumably uncommon). The highest bed seen 

 contains Campophyllum cylindricum, Scouler. These fossils point to 



