HARD WICKE ' S S CIE NCE-G OSS I P. 



205 



between the chalk marl and the greensand ; in either 

 case the formation is a curious debris of former rocks, 

 occasionally even oolitic fossils being found associated 

 with mollusca peculiar to the greensand. In the Isle 

 of Wight the upper greensand is about fifty feet in 

 thickness, the chloritic marl formimg about the upper 

 four feet of this series of rocks. Hamitis attemiatits 

 (fig. 160), derived from hamus, a hook, is a rare fossil 



Nautilus expansusbdng common in the chloritic marl 

 at St. Lawrence. The ammonites are well represented 

 in lower chalk, chalk marl, and greensand. I figure 

 three of the best specimens, A. Cooperii (fig. 164), 

 chloritic marl; A. fahatus (fig. 157), A. Mantellii 

 (fig. 163) lower chalk and chalk marl. 



In this short article I have confined myself to the 

 Cephalopoda, but all the characteristic fossils of the 



Fig. 161. — Fragments of//, attemiatns. 



Baaditis ancefis. 



which I obtained with great difficulty from the lower 

 chalk beds ; this is a fine specimen, showing the 

 separate courses. The fragments (fig. 161) were all 

 from the chloritic marl, and are of various species ; 

 in Woodward's "Mollusca," fifty-eight species of 

 Hamites are mentioned. Baculites anctps (fig. 162) 

 also comes from the lower chalk, from the St. Boniface 

 Quarry ; the valve and four chambers are in this speci- 

 men distinctly marked. Scaphites crqualis (fig. 156), 

 occurs in one particular band of the chalk marl, a few 

 inches only in depth ; once hit on the exact line, and 

 several specimens may be obtained. JVautilus elegans 

 is to be found in St. Boniface Quarry occasionally, 



Fig. 164. — Ammonites Cooperii. 



three formations are to be found. In my 

 cabinet I have teeth and vertebrae of sharks 

 and fish ; shells of the various families, Tri- 

 gonia, Natica, Cucullus, Venus, Pecten,. 

 Ostrea, Actseon, Trochus, Pleurotomaria, 

 Pfnopsea, Lima, Cardium, Terebratula, &c. ;. 

 also the various Echinites. 



C. Parkinson. 



Parasites on Hedgehogs. — Have hedgehogs 

 parasites, and, if any, have they ever fleas, and have 

 they any means of ridding themselves of them ? I read 

 the article last July "My Hedgehogs." I have a 

 hedgehog, and a friend of mine tells me they have 

 fleas. I have never noticed it, and rather doubt the 

 probability of nature having allowed an animal of 

 that peculiar growth to be afflicted in such a manner. 

 — Singer Barclay. 



