REMARKS ON THE IMBER AND NORTHERN DIVERS. .^g 



And in the facade of Magilligan, the highest of all. a few Additional evi. 

 desultory patches of an upper stratum (no doubt once per- ^^^ 

 "feet and continuous) are to be traced along its summit. mocks. 



Our mountains themselves seem to show clearly, that they 

 were once higher ; the top of Magilligdn mountain is an ex- 

 tensive plain, over which a wandering stratum is interrupt- 

 ed and resumed at intervals for a great way. 



At the highest part of Donald's Hill, over the valley of 

 Clenuller, we tind a hummock; also at the termination of 

 the ridge, at its highest part over the valley of Mayola, si- 

 milar hummocks. I have the honour to be, Sir, 



Your obedient, humble Servant, 



Clonfecle, Jan. <2, 1808. W. RICHARDSON. 



III. 



Remarks on the Habits of the Imber and Northern Divers, in 

 answer to a Correspondent, In a Letter from Thomas 

 Stewart Traill, M. Z>. 



To Mr. NICHOLSON. 

 SIR, 



IN article X of your last number, a correspondent wishes Author of th* 

 for information concerning the habits of the Colymbus Im- *? count of thc 

 mer. The observation of the Reverend Author of an Account mistaken. 

 of the Feroe Isles must be incorrect, when he asserts, that 

 ** the imber lives constantly on the dry land. 1 * 



Both the colymbus immer, and c. glacialis are frequently Habits of the 

 met with among the Orkney and Shetland isles, where I northern di- 

 have had many opportunities of observing them swimming v ers. 

 about with great velocity, and experienced the difficulty of 

 shooting them, from the celerity with which they dive on 

 the flash, and the very great distance they swim underwater. 



The inhabitants of these islands have never seen either of Similar story of 



the two species of diver above noticed on the dry land : and. hs I" !??! 00 



. . r _ . . - •■-. . ,* , i / ,. ' m the Orkneys 



to explain the incubation ot a bird which they believe never and Feroe 



quits the water, have had recourse to the story of its hatch- islan<1 *' 

 ing its egg under its wing, a3 well as the natives of the Fe- 

 roe isles. As the egg has never been found in such a situa- 

 tion by any one, it is not easy to discover the origin of such 



S 2 a stor 



