THE ARCHIPELAGO OF BREHAT. 139 



Other nations are following the example of France. 

 As they formerly copied the revolving apparatus 

 invented by Lemoine and the reflectors suggested 

 by Borda, they now borrow Fresnel's lenses and the 

 lamp devised by Fresnel and Arago, whilst they 

 resort to Paris for nearly all the apparatus employed 

 in lighting their own coast-lines. We have therefore 

 some right to declare with just pride, that it is to 

 France that mankind owes all the essential progress 

 which has been made in reference to a question so 

 vastly important to the security of navigation, and 

 consequently so intimately associated with the in- 

 terests of commerce and humanity. 



After having carefully examined and admired 

 every portion of the magnificent lighthouse of Hehaux 

 I returned to my daily avocations at Brehat. But 

 the bad weather was setting in ; I often came home 

 from my excursions wet through and shivering with 

 cold, so that I felt it was time to think of taking my 

 departure. My good friend the custom-house officer 

 once more lent me his pinnace, and I left Brehat 

 enriched with numerous drawings, notes, and collec- 

 tions of animals, many of which were carefully 

 preserved in spirits.* My passage was alike rapid and 

 agreeable, and with scarcely a stoppage I returned 

 to Saint Brieuc by the same road which I had pur- 

 sued three months before. The country was still 

 looking beautiful, although the decline of the year 



* All the objects which I collected in this and the following 

 expeditions have been deposited in the Museum, and now form a 

 portion of the collection connected with the chair held by M. 

 Valenciennes. 



