Kichards.] 150 [April 5, 



of those educators who are endeavoring to diffuse a knowledge of 

 scientific principles and phenomena among the people. 



Mr. L. S. Richards exhibited a stone taken from the exca- 

 vations at Fort Hill, in this city, near Oliver Street, seventy- 

 five feet below the surface, which, like the majority of the 

 stones taken from the drift near this spot, was covered with 

 " glacial " grooves and scratches. He had also found on the 

 southerly side of the locality conglomerate in the process of 

 formation without the action of heat. 



On the Relations of Anomia. By Edward S. Morse. 



Under the name Anomia was included Terebratula by the early 

 writers. Misled by external appearance, Linnams, Lamarck and 

 others believed Anomia and Terebratula to be closely related. While 

 not the slightest ground existed for bringing them together, yet the 

 mere fact of these two animals being enclosed within a living shell 

 composed of two pieces, held to the rock by a process which passed 

 out through that element of the shell which was undermost in both 

 cases, furnished sufficient proof of their relationship to those who 

 were ready to judge everything from external appearance. 



The whales among fishes, the barnacles among mollusks, were only 

 some of the blunders committed by this superficial way of compari- 

 son; and now after the external elements of the Brachiopods are ad- 

 mitted by all writers to be dorsal and ventral, while the valves of 

 Anomia are right and left, and after the splendid memoir of Lacaze 

 Duthier on the anatomy of Anomia 1 has shown that its nearest rela- 

 tions are with the Pectens. etc., there are still some writers who 

 vaguely imagine that some sort of relationship exists between the 

 two. 



It is refreshing to turn back twenty years and find Forbes 

 stating that "a close examination shows that there is no relationship 

 of affinity between them, but only a resemblance through forma* 

 analogy." 



This brief note is given to verify the correctness of a statement 



Organization of Anomia. Ann. So. Nat. 1854, n series, 5-35. 



