99 



are confined to the ocean, though they are in many i-espects 

 more highly organized than the other fishes ; again, the low- 

 est of all fishes, the Lancelet and the Mixine, are purely 

 marine animals. Among the Articulates the class of Crus- 

 taceans is to a great extent oceanic, and the larger species 

 are strictly so. Most of the large worms are inhabitaiits of 

 the salt water ; and even among the Insects there are many 

 species that live on the sea-shore, on the Sea-weed, &c. The 

 greater number of the Mollusks are also marine, and the 

 whole class of Cephalopods (Squids, &c.,) in which wo find 

 the giants of the branch, are strictly so. Among the Eadi- 

 ates there are few, such as the fresh water Bryoza, that are 

 found away from salt water. The difference noticed be- 

 tween the animals of the ocean, the fresh waters, and the 

 land, is, as a general thing, so well marked, that we can al- 

 most always assume that the oceanic representatives of a 

 group are the lowest, the fresh-water ones being higher and 

 the terrestrial the most highly organized. 



0. M. Tracy of Lynn, had spent most of the forenoon 

 in the Magnolia Swamp. There are species of plants in 

 that spot not generally to be met with. Not only is the 

 Magnolia there, but also a beautiful white fringed Orchis ; 

 the pretty Clintonia : the Inkl^crry, a species of Holly, and 

 one of the finest evergreens we have ; the brilliant and 

 charming Sundovf ; with others of commendable beauty. 

 He Vv'ould like to make careful search through that swamp, 

 for it would hardly fail to reveal m?ny botanical treasures. 



The thanks of the Institute were then voted to the Messrs. 

 Ba,rtlett of Wcnham and the Messrs. Knowlton of Kettle 

 Cove, for their kind attentions during the day, and the In- 

 iitute adjourned. 



