Geology, c^'c. of the Connecticut. 25 



green fluor spar, and the Wardsborough zoisite. The 

 Chatham Cobalt mine occurs in mica slate. 



The cryptogamous plants that usually overspread a great 

 part of the mica slate of this region, though perplexing to 

 the mere geologist, are yet interesting to the botanist. 

 Among those which adhere to these rocks, or to the little 

 soil that collects in their cavities, may be named, Bartra- 

 mia gracilis, Smith, B. longiseta, Alx') B. crispa, Sioartz, 

 Tledwigia Jiliformis, P, Beuuv. in great abundance; Arrhe- 

 nopterum heterostictna, Hedw. Buxhnumia nphylla, Lin. 

 Fissidens adianthoides, Bryum roseum, Diphyscium folio- 

 sum, Spreng. Polytrichum perigoniale, Mx. Jungermannia 

 complanata, L. J. platyphylla L. Cenomyce phyllaphora, 

 and pyxidaia, Ach. Stereocaulon paschale, Parmel'tt herha- 

 C€a,saxatilisandcaperata,Porinapapillosa,andperiusa,Pelii' 

 dea aphihosa and scutata, and Sticia pulmonacea, all of 

 Acharius. In the region of the mica slate, especially in 

 Brattleborough and Coiiway, we frequently find Bryum 

 cuspidatum,Brid. Hypnum minutulum,Mx. H. flexile,Brid. 

 H. serpens, L.H. cupressiforme,Hedw. Jungermannia no difo- 

 lia, Torrey,Maschalocarpus trichoniirion, Hed. Pterigonium 

 subcapillatum,Brid. Neckera rninor, Brid. M. pennata,Hed. 

 JV. viticulosa,Hed. Cenomyce coccfera, rangiferina, botrys, 

 ^c. — Parmelia colpodcs, ulothrix, cyclocelis, parietina, 

 plumbea, ^c. — Lecanora tuberculata, subfusca, brunnea, al- 

 bella, &J-C. — Lecidea parascena, cameola, demissa, ^c. — [7s~ 

 neaflorida and plicata, Corniculariafibrillosa, Collema tu- 

 naeformis, and Alectoriajubala, all of Ach. Kephroma resu- 

 pinata, Spreng. Gloniu7n stellare, Muhl. Polyporus ahietinus 

 and squamosus, Fries. Hydnum quercinum and cyathiforme, 

 Fries. H. imbricatum, occanum, coralloides and gelatinosum, 

 Pers. Thelephora quercina and terrestris, Cyathus olla and 

 striata, Stemonitis fasciculata, Boletus citrinus, badius, bru- 

 malis, nigro-marginatus, cinnabarinus, velutinus, betulinus, 

 ^c. all of Persoon, and many scores besides of Agaricus, 

 Amanita, Sphaeria, Peziza, Daedalea, Helvella, Lycoper- 

 don, Bovista, Scleroderma, Tremella, Sfc. too numerous 

 to mention in this place. 



Scattered among the mica slate rocks we frequently find 

 the Htlix allolabris, Say, or common snail; and also, in 

 some situations, H. alternata, Say. In a pond in Ashfield 

 is found Planorbis bicarinatus. Say, and Cijclns similis. Say, 



\oh. VI.~No. I. 4 



