PLATE 10. 
Figure 1.— A trruncatep Foitp sennATH Rock-FLour anp ANNUAL Layrrs, Woopsvitte, N. H. 
This figure illustrates the upper part of member 26, and the lower and middle part of*member 27 
of the Lamarre clay-pit, described in the text and shown in Figure 1, (p. 18) and Plate 1, Just above 
the knife may be seen the upper part of a cut-off fold. Above this deformation comes a layer of rock- 
flour about ten inches thick. A glaciated rock-fragment was found in this rock-flour. Lying on the 
rock-flour layer are annual deposits about two inches thick for each couple. These couples grow thinner 
upward and near the top of No. 27 are about one half inch thick. ; 
Figure 2— Transition Beps BETWEEN TILLITE AND SLATE Formation, Squanrum, Mass. 
This view shows the irregular nature of the beds lying on the tillite and below the main slate forma- 
tion at the southeastern end of the Squantum Peninsula. At the right of the centre of the picture 
the slate begins to show regular banding. This view was taken looking northeast, almost along the 
strike. The dip here is about 70° S. E. 
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