. Agriculture of New York : comprising an account of the classification, composition and distribution of the soils and rocks ... together with a condensed view of the climate and the agricultural productions of the state. Agriculture; Soils; Fruit-culture. A PART OF THE TACONIC SERIES. 89 In this vicinity, we have the lower Helderberg rocks, in addition to the Champlain group, reposing upon the Taconic system. The occasional appearance, then, of rocks of another age, under the circumstances and conditions presented at Chatham and Hudson and the intervening country, throws an obscurity over the
. Agriculture of New York : comprising an account of the classification, composition and distribution of the soils and rocks ... together with a condensed view of the climate and the agricultural productions of the state. Agriculture; Soils; Fruit-culture. A PART OF THE TACONIC SERIES. 89 In this vicinity, we have the lower Helderberg rocks, in addition to the Champlain group, reposing upon the Taconic system. The occasional appearance, then, of rocks of another age, under the circumstances and conditions presented at Chatham and Hudson and the intervening country, throws an obscurity over the questions of age, identity, etc., which rarely calls for solution in other places. Nevertheless the evidence is so strong in favor of the interpretation I have given of the relation of these masses, that I have had no doubt of its propriety ; although when I published my Report of the Second Geological District, I was not prepared with proofs to sustain it. Turning, the attention of the reader once more to Washington county, he will find a few interesting examples in the relative position of the members of the two systems : the calciferous of the New-York system, and the black slate and coarse taconic slate of the Taconic system. The first example is an illustration of the rocks of Bald mountain. This knob is one of the highest points that skirt the valley of the Hudson upon the east. It overlooks the valley for a great distance; and from it, also, the interior mountains of the northern wilderness at the sources of the Hudson loom up in a bold outline in the north- western horizon. Passing over, however, the magnificent scenery of this spot, I proceed to speak of the structure of the mountain. The diagram fig. 11 will aid in explaining the most important parts. Fig. The slope a, b, e, d, looks to the west. The calciferous sandstone is represented by d, d. c, indicates the blue portion of the calciferous sandstone I have had occasion to speak of in other places: it forms t
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