Excerpt from Report on the Geological Map of Massachusetts
The particular facts which they have contributed will be found in the body of the text. In formation with regard to the eastern boundary of the Miocene on the island of Martha's Vineyard, and some other points, were contributed by Prof. N. S. Shaler, from maps prepared by him for the United States Coast Survey, and our acknowledgments are also due to them.
Valuable and efficient aid, without which much of the work would necessarily have remained undone, has been received from the Presidents and Directors of the following Railroad Companies, in the form of free passes over their respective lines: the Eastern, Fitchburg, Old Colony, Boston and Providence, and Connecticut River. The Boston Society of Natural History has also, in the loss of the services of the Custodian and his Assistant, while engaged in the construction of the Map, contributed largely to its successful completion.
Mr. Crosby has been much in the field, the weather having been very favorable during the past winter. Mr. Burbank and others have also spent considerable time in this way. In fact, everything has been done to make the original work accurate, which the time and the necessarily limited appropriation would permit.
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