408 MESSES. H. W. MONCKTON AND E. S. HEREIES 



remarkable anticlinal again brings in the green-sand bed on the 

 north side of the valley, north of the station ; whereas we believe 

 that the Lower Middle and Lower Bagshot beds gradually come to 

 the surface, owing partly to a slight southerly dip, and partly to the 

 gradual fall of the ground. Mr. Irving does not contend that the 

 green sand may be seen at the surface north of this valley, but 

 relies upon a well-section on the Devil's Highway (Q. J. G. S. vol. xli. 

 p. 503). Unfortunately, however, we are unable to confirm his 

 description of that section. One of the authors visited the well (the 

 level of which is shown by the star c in figure 1) in March 1883 ; he 

 cannot remember whether the digging of the well was completed or 

 whether the bricking-up had begun ; in any case he did not descend, 

 but relied on the statements of the workmen and an inspection of a 

 heap of sand at the side. The following was the eijtry which he 

 made at the time in his note-book : — 



" Well at New Lodge, 



feet. 



Surface earth 2 



Clay 5or6 



Sand 20 or more. 



» 



" The sand is of a yellowish grey, very hard. — March, 1883." 



The accuracy of this note is borne out by a new well, a little to 

 the north, at the star d in figure 1. The authors are of opinion 

 that the sands in these wells are not the Middle Bagshot green sand, 

 but that the clay at the top of the well c is the basement-bed of 

 the Middle Bagshot, and the sands and clays below are Lower 

 Bagshot. 



We do not therefore admit the alleged anticlinal above referred 

 to, nor that the Upper Bagshots occur on the South-Eastern Kailway 

 north of the Wellington-College Station ; but we believe that the 

 Middle Bagshot rises at a very low angle to the north, which is borne 

 out by the sections at California and Upwick Hill, shown in fig. 2, the 

 top of which is at the level shown by the star c in fig. 1. 



The Geological Surveyors and Mr. Irving assign beds 1 to 4 in fig. 2 

 to the Middle Bagshot, but we are inclined to place the beds 3 and 

 4 in the Lower Bagshot, as stated in our last paper (Q. J. G. S. 

 vol. xxxix. p. 350). 



Our reasons shortly are the resemblance of bed 2 to the basement- 

 bed of the Middle Bagshot in other sections (Ascot and Goldsworthy 

 for instance), and the difficulty of separating the yellow sands of 

 bed 3 from those of bed 5, which latter we have no doubt are Lower 

 Bagshot. About one third of a mile north-east of this brickfield, and 

 at about the same level, there is a section at the California Rifle- 

 Butts, in yellow sand with a few seams of white clay ; it is of the 

 usual Lower Bagshot character, and the sands are precisely like 

 bed 5 at the brickfield. 



We thus find the Middle Bagshot green sands and clays cropping 

 out along the side of the hill, and the Lower Bagshot coming to 

 the surface to the north ; and we see no reason why a similar 



