stony. The great obstacle to vegetation is the north wind, called 

 the Bora, which is very drying, and destructive to vegetable life. 

 In such a territory, the vegetation is of course various. The Al- 

 pine plants are of great variety ; some of them, as the Anemone 

 alpina and Geranium argenteum, cannot exist when brought from 

 the height of 5000 or 6000 feet above the level of the sea. Mr. 

 T. exhibited dried specimens of the following species : Anemone 

 stellata ; Pulsatilla montana, from an elevation of 6000 feet ; Helle- 

 borus agamenticus, the character of the seed vessels of which 

 elucidates a section of Ranunculaceae ; Peonia ferruginea ; Denta- 

 ria digitata, Lamk. There are said to exist four species of the 

 Dentaria in the United States, the D. maxima, resembling the digi- 

 tata, except that the former has ternate leaves, and the latter quinate. 

 Iberis umbellata or candy tuft ; Acer opalus ; Spartium junceum ; 

 Genista sericea ; Medicago marina ; Gladiolus myricus ; G. bon- 

 cheanus ; Crocus variegatus ; Romulea columnar ; Orchis apifera ; 

 Orchis rubra and militaris ; the latter exceedingly interesting ; the 

 manner in which the new bulb is produced on one side being ex- 

 hibited in this instance, so that, as the old bulb dies, the position of 

 the plant is necessarily changed at each reproduction, and it is 

 found to move in a curve ; Orchis nigra and camphora ; Carpinus 

 duinensis, much resembling our C. Americana ; Quercus suber or 

 Cork oak ; Q. ilex ; Pedicularia Fred. Augusti ; Gentiana Pannon- 

 ica and acaulis ; Aronia rotundifolia ; Erica carnea ; Satureja Jlly- 

 rica ; Primula venusta and multiceps ; Statice cancellata. 



Dr. Gould gave results of his investigations concerning 

 the Testacea of Massachusetts. 



The whole number now catalogued is 268, of which there be- 

 long to Cirripedes, 12 ; Conchifera, 97 ; Brachiopoda, 2 ; Gastero- 

 poda, 154. Of these, 29 belong to the land, 42 to fresh water, and 

 197 are marine. Seventy of these have been discovered and de- 

 scribed within the last five years. The Catalogue in Professor 

 Hitchcock's Report of 1833 enumerates 126 species ; that of 1835 

 named 165 species, so that the number of shells at present known 

 is more than double the number known eight years ago. Cape 

 Cod is found to exercise a great influence upon the geographical 

 distribution of species. Of the 197 marine species, 83 do not pass 

 to the south of the Cape ; and 50 have been found only on the north 



