80 GUIDE TO LOCALITIES. 



em slope of "Liberty plain" (one hundred and forty feet) where 

 it is used as a cemetery. Follow the western margin and note 

 that it is a steep lobate delta front, not an ice-contact slope. 

 Southward can be seen the valley of Old Swamp river, one of the 

 outlets of the lake at the Liberty stage. The road leads east 

 across Liberty plain, and shows many rocky shore lines. Leav- 

 ing the plain go to Queen Ann's corners, where the car ma\' be 

 taken for Hingham. The car passes northward over the eastern 

 lobe of Liberty plain, across a fosse, and on to Glad Tidings 

 plain (seventy feet). Leave the car at the first cross-road after 

 reaching this plain, and take the road leading east, continuing for 

 two miles. Passing through a belt of moraine, the road crosses 

 one of the highest hills of this moraine, situated about a mile 

 north of Prospect hill. At the highest point, climb the fence and 

 descend the northeastern slope, reaching at eighty feet below its 

 summit a well-marked cliff cut into the northern margin of the 

 hill. North of this cliff the valley floor is level, and thickly 

 strewn with boulders. This is believed to be the outlet of the 

 Whitman stage of lake Bouve, whence the waters passed south- 

 eastward. 



To return, take the car for Hingham, passing across the eastern 

 lobe of "Glad Tidings" plain, and finally onto and over '-Hing- 

 ham plain" (fifty feet). At Hingham the train for Boston can be 

 taken. 



The western part of the lake, including Monatiquot bay, cannot 

 be visited readily without a map or guide, and requires more time. 



Martha's vineyard and gay head. 



Route. — To Cottage city from Boston by rail and boat connections, 

 Old Colony system, Kneeland street station. By stage to Gay Head. 



All that can be done here is to refer to the literature on the sub- 

 ject, on account of the size of the area involved. 



Literature. 



Shaler, N. S.— Geology of Martha's Vineyard. (U. S. Geol. Surv., 7th 

 Ann. rep., pp. 297-303.) 



Shaler, N. S. — On the occurrence of fossils of Cretaceous age on the 

 island of Martha's Vineyard. (Harv. Coll., Mus. C'omp. Zool., Bull., vol. 

 16, pp. 89-97.) 



