Correspondence — Dr. M. C. Stapes. 



285 



of fact, no Lias of these zones occurs in the cliffs at Charmouth is 

 untrue, unless "cliffs at Charmouth" is limited to Black Ven. 

 Above a big gully immediately under the western end of Fairy Dell 

 on Stonebarrow Cliff, within a mile of Charmouth Church, a section 

 is exposed showing the Three Tiers at the base of margaritatus in place 

 (last seen Jul}-, 1911); and, nearer Charmouth, in Stonebarrow 

 Cliff west of the Dell, the lowest Tier with Ammonites of the 

 margaritatus group may be seen. Incidentally it may be mentioned 

 that the Three Tiers (as well as the beds immediately below down to 

 the Belemnite Stone) are about half as thick here as at Grolden Cap. 

 The western end of Stonebarrow cannot reasonably be excluded from 

 the " cliffs at Charmouth ". 



Renevier ' held that, on account of priority, Pliensbachian should 

 be used rather than Charmouthian. I am not aware that this 

 principle is binding in stratigraphical nomenclature. But, whatever 

 term finally is selected, there is no need either to shift the boundaries 

 of Mayer-Eymar's Charmouthian or to object to the term on the score 

 of topographical inexactitude. 



W. D. Lang. 



THE EED CKAG PORTEAIT. 



Sir, — In the last number of the Geological Magazine (May, 1912) 

 the Eev. 0. Fisher figures some of the early handiworks of man. 

 Among these is the sawn bone recorded as from the Crag, which was 

 in Sir Joseph Prestwich's collection for many years and is now in the 

 British Museum. 



This reminds one not merely of the Eed Crag portrait-shell in 

 which Sir Joseph was much interested, hut accentuates the fact that 

 this shell has never been illustrated. Consequently no figures of it 

 are available for those who are interested, and its appearance is only 

 known to our personal friends and some others who have seen it. 

 Without repeating its history it must be mentioned in explanation 



Carved Shell of Pectunculus glycimeris, Lmn. Eed Crag : Walton-on-the-Naze, 

 Essex. Eeproduced from a photograph, nat. size. 



^ Eenevier, loc. cit. 



