In more elevated situations, on Giant Mountain, one finds the 

 forest to consist of Picca sp. and Abies balsauua, together with 

 Bettila papyrifcra, Acer nibmm, Betiila lettta and B. lutea, with a 

 fern, Dennstaedtia piinctilobula (= Dicksonia pilosiuscuia), abun- 

 dant, together with Rlbcs prostratuui and Rtibiis strigosus {Picca 

 facies). 



Pi)iiis rcsiiiosa, in a few localities, as on the southeastern slopes 

 of Baxter Mountain (2,400 feet), makes a formation {Piiuis rcs- 

 inosa formation). Sometimes Piints Strobus is intermingled with 

 Junipcrus comnuoiis alpi)ia together with Vacciiiiimi pcniisylvcmi- 

 cuin, V. catiadensc and Pteridiiun aqinlirunn on the rocks {Junip- 

 crus- Vacciuium association). Near these rocks grow Populus 

 trcDiuloidcs, Ainelaiichicr oligocarpa, Betula papvrifcra. Spiraea 

 salicifolia and Diervilla trifida. The two pines dominate the 

 southwest slopes of Baxter Mountain down to the lowest ridges, 

 where Qucrcus rubra, Acer penusylvanicum, Tsuga canadensis 

 are in association, finally changing below to Tsuga canadoisis, 

 Fagus aiiiericana, Abies balsainea and Acer saccJiaruni. 



The ponds, or small lakes of the Keene Valley neighborhood, 

 are fringed by Cliamacdaphne calyculata, Cornus alteniifolia, Thuja 

 occidentalism Bettda papyrifera, Abies balsainea, Picea Mariatia 

 (= /'. rubens Sargent) and Pinus Strobus, together with Galium 

 asprellum and fmpatiens bifiora, while in the shallow water occur 

 Nymphaea advena {Nuphar advena), Lobelia Dortnianna, Eriocau- 

 lon sp. and Sparganium simplex (lake-plant formation). The 

 ferns of the forest, near such ponds, are Polypodi?im vulgare (on 

 boulders), Adiant2tin pedatum, Botrychium virginianum and Poly- 

 stichum acrostichoidcs. 



Rock-Gorge Formation. — This is typicall)' developed in the 

 Au Sable Chasm in the northern part of the Adirondack area. 

 The Au Sable River has cut a narrow gorge, or occupied a fault, 

 with almost straight sides and a few overhanging shelves of rock. 

 Along the crest of the precipices and in the gorge, according to 

 my observations, are found Pinus resinosa, Betula papyrifera, 

 Tsuga ca/mdensis. Thuja oceidentalis, Betula lutea and Acer ru- 

 brum, while somewhat back from the gorge together with the 

 above-mentioned trees are Pinus Strobus, Betula populifolia. 



