348 G. WARETNG. ORMEROB OX THE MCRCniSONTTE 



upper beds of the Bunter. From this fault to Dawlish the soft 

 sandy beds appear in the cliffs ; and I have not been able to find a 

 trace of Murchisonite until arriving at the steps leading by the 

 Dawlish Coast-guard Station to the top of the cliff. From this 

 place the Murchisonite can be found as a component part of a soft 

 conglomerate consisting of small angular fragments of various rocks 

 extending on the strike a distance of about two miles and a half by 

 Gatehouse, Gulliford, and Newhouse to near Mamhead, and extend- 

 ing in a westerly direction as a general boundary to a brook called 

 Dawlish Water ; the lower part of the bed may be seen by the 

 entrance to Mamhead Parsonage and the cross roads at Whi&tlade. 

 The only portions of the beds seen are the superficial ; and as it has 

 not been quarried, there is no opportunity of comparing it satisfac- 

 torily with the beds which it is considered to represent as seen at 

 Exminster and other places. Below this bed soft sandy rock occurs, 

 as seen on the southerly side of Dawlish, in which I have only found 

 a few specimens of Murchisonite ; and below this bed lie the conglo- 

 merates which have been so ably described by Conybeare and Phillips. 

 The Murchisonite found in the beds that have been mentioned, 

 generally consists of small detached crystals ; in those that will now 

 be described it is found in this state also, but more frequently as a 

 component part of the granitic or porphyritic pebbles. After the 

 second tunnel a series of conglomerate beds commences, differing 

 greatly from those above mentioned, consisting of angular and sub- 

 angular fragments of hard shale, black siliceous rock, quartz, car- 

 bonate of lime, porphyry, granite, limestone, both with and without 

 organic remains, and sometimes in blocks nearly a foot in diameter — 

 and Murchisonite both in the granitic and porphyritic pebbles, and 

 in detached crystals. These are well seen in the bay between the 

 fourth and the Holehead Tunnel, on the southern side of that tun- 

 nel at Holehead ; and in Smugglers' Lane leading from that point 

 they can be well examined. The conglomerates cease at this p]ace 

 for about three quarters of a mile ; and the cliffs between Smugglers' 

 Lane and Teignmouth Tunnel show alternating soft marly and pebbly 

 beds, sometimes containing thin grey bands. Near the Breakwater, 

 at a recess in the cliffs used as garden-ground, a fault can be noticed, 

 the dip on the northern side (about 20°N.N.E) being much greater 

 than that on the southern (10° to 12°) ; this probably passes in an 

 east-and-west direction to the south of Teignmouth Waterworks, by 

 Onondaga Villa, in Coombe Lane, and to the north of Park Farm, in 

 Bishopsteignton, where the sandstone comes into near contact with 

 the greenstone and is highly crystalline. In the low cliff near the 

 baths at Teignmouth, Murchisonite may occasionally be noticed in 

 the granite pebbles; and in that cliff large rolled stones occur 

 measuring in the face of the cliff 3 feet by 20 inches. When an 

 excavation was made for the foundation of new houses at the corner 

 of Fore Street and Orchard Terrace, in Teignmouth, a deposit of 

 large stones of a similar character was reached. Soft red beds with 

 bands of fragments of various rocks are to be seen in the grounds at 

 Bitton, and at a low cliff to the east of the Tollgate, at Shaldon 



