802 



THE GEOLOGIST. 



True, tlie " Upper and Lotoer Bag shot Beds are not noticed" in my 

 Table ; for the simple reason, that they cannot be regarded as good " Ma- 

 rine Types," like the Barton and Bracklesham Clays : one contains only a 

 few vegetable (Terrestrial) remains ; and the other rarely any fossils, ex- 

 cept in one place, where, however, they are " in too friable a condition to 

 bear transporter examination." (See jukes's Manual, 1st ed. pp. 527 and 

 531; also Phillips's Manual, p. 387.) 



In placing certain "marine and fresh-water types" on " the same line," 

 the object was to show that they may be approximately " of the same age." 



When "W. W." takes on himself again 



" To spy into abuses, and shape faults 

 That are not," 



or to "point out" the "many other mistakes" which he fancies I have 

 committed, I would feel obliged by his showing the relation between the 

 Lower Green Sand and the Atherfield Clay. At the friendly suggestion 

 of the Editor of the ' Geologist,' I have inserted, in a new edition of the 

 Table, now printing as a separate sheet, the Lower Green Sand, placing it 

 at the bottom of the Cretaceous System. 



Permit me to embrace the present opportunity of making a few cor- 

 rections before closing this letter. The name Rhyncopora in my Table 

 (proposed for a genus or sub-genus, typified by De Verneuil's Terehratula 

 Geinitziana, the peculiar characters of which were described in my " ISTotes 

 on Permian Fossils," published in the ' Annals and Magazine of Natural 

 History' for April, 1856) should have been spelled Rhynchopora. " So- 

 merset Teleosaurus Upper Lias," suggested by my friend Mr. C. Moore, 

 of Bath, was by some mistake placed in the J urassic instead of the Lias- 

 sic System. 



In my paper " On the Origin of Species," contained in the last number 

 of the ' Geologist,' a slight mistake has occurred. The first line of the 

 sixth paragraph ought to have been — " There is no difficulty in referring 

 to instances, ' etc. 



I am, dear Sir, yours very faithfully, 



William King. 



Belmont, near Galway, July 4, 1862. 



Tertiary Mammalian Remains at DulwicJi. 



Sir, — It may be interesting to your readers to know that I have lately 

 found a front tooth (incisor or small canine) of a mammalian animal from 

 the Woolwich Beds, near Dulwich, exposed some time since by the works 

 for the southern high-level sewer. Mr. Eickman has found some bones 

 he calls mammahan, but there is a doubt as to their being such. 



Yours, etc., 



A. BoTT. 



5, Hanover Terrace, Pechham, lltk July, 1862. 



Sicilian Bone-Caves. 



_ Sir,— I hasten to give that explanation of the error or rather confusion 

 m my Table which Dr. Falconer, as the original describer of the Grotta 

 di Maccagnone, has a right to demand. 



