﻿246 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Apr. 30, 



specimens came from the bed No. 213 of the section published in our 

 Quarterly Journal*. In the annexed diagram, fig. 8, Mr. Brown 



Fig. 8. — Section showing the position of Rain-prints (b, b) in the 

 inclined Coal-measures of Cape Breton, Nova Scotia. — Richard 

 Brown. 



v ~ 



214 



212 213 



b, b. Position of the Rain -prints. 

 C, C. High- water mark. 



212. Red shale. 



213. Greenish arenaceous shales with Rain-prints. 



214. Red shale. 



A. Sandstone, the upper layers of which pass over the red shale 214. 



215. Arenaceous shale. 



has been enabled to give, in consequence of the altered state of the 

 cliffs, a more correct representation of the beds containing rain- 

 prints than that before published, for he has discovered that the up- 

 per layers of sandstone, A, about 1 foot in thickness, spread over the 

 shale 214, towards the dip. The exact position of the rain-drops in 

 the laminated and rippled arenaceous shale, No. 213, is indicated in 

 the annexed diagram, at b. b. fig. 8. Some of the layers in No. 213 

 consist of almost pure sandstone. Here, as in another instance in 

 the same line of coast, the rain-prints, which are very perfect in a 

 higher part of the cliff, become first indistinct lower down and then 

 disappear, showing, says Mr. Brown, that they constituted originally 

 a narrow zone, as they would naturally do on a sea-beach. In the 

 drawing given of some of these drops (fig. 5), many of them are seen 

 to be very oval in form, and their deepening at one end shows the 

 direction of the wind, as indicated by the arrow. 



In the same manner as in the recent mud of the Bay of Fundy, 

 the tracks of annelids are seen in the carboniferous shale on the same 

 surface with the rain-prints (see fig. 5), and some of the ancient 

 worm-tracks disappear and rise again to the surface as do those of 

 modern date. A drawing is also annexed of one of the sandstones 

 from Cape Breton (fig. 7), with casts both of rain-prints and of small 

 cracks, which must have traversed the subjacent clay on which the 

 rain fell. 



In re-examining the slab figured in my * Second Visit to the United 

 States f,' which I brought in 1846 from the coal-strata of Greens- 

 burg, Pennsylvania, on which Dr. King found impressions of a car- 



* Vol. vi. p. 119 ; not in No. 214, as was there stated by mistake, 

 f Vol. ii. p. 306. 



