240 CORRESPONDENCE OF RAY. 



I told you there are many Pectunculites four and six 

 times as large as any shell of that yet known ; I speak of 

 England. 



The Nautilus shell in museums seems to rae to be 

 only the tail of the animal, and the diaphragms thereof 

 the vertebrae ; I know not how many volutse the perfect 

 shell itself may have. 



Your opinion of cartilaginous fishes poising and raising 

 themselves seems probable to me. I am not able to 

 resolve you about those blood-vessels of vipers, serpents, 

 and fishes, which you mention. 



How do the cetaceous fishes raise and poise them- 

 selves? I think they spout water. How doth the 

 Lamprey \Fetromyzon marimis], the Mullus [Red 

 Mullet], the Anchovy \_Engraidis encrasicholos], the 

 Draco marinus [the Great Weever], the Tunny \Thynnus 

 vulgaris'], the Drum fish [Tmnburo], the tlranoscopus, 

 the Dolphin, the Centrina, the Skate, Torpedo, Bana 

 Piscatrix, Scorpius major, the Bull Head \_Cottus 

 gobio\, &c., which Signor Redi in a late book affirms 

 to have no air- or swimming-bladder, raise and poise 

 themselves ? 

 Londou, Feb. 25, — 9^. 



Mr. Lhwtd to Mr. Eay. 



Honoured Sir, — The Holywell Moss seemed to me a 

 variety (though perhaps it may be a distinct species) of 

 the Mmcus Trichomanis facie, Sfc, Jimgermanni. The 

 common people will not have it called Mivswgl [moss], 

 but Gwiribh ; which word is nowhere else used in any 

 other signification than for a virgin. And here perhaps 

 it may allude to the virgin St. Winifrid, and might 

 have been formerly called Gwdlht Gtviribh, i. e. Capillus 

 virginis. Georg. Agricola* says that the stones smelling 



* De Nat. Foss., 1. i. c. 5. 



