872 The American Geoloijisf. Junc,i85n 
uiiineroiis shells of Endoceras which the3' contain. The bear- 
ing is N. (50-80 degrees E. and the apices lie towards the east. 
On the tumulus, slabs with well-preserved rhabdosomes and 
whole colonies of Diplogrcvptus pristis are found. The rhab- 
dosomes point in all directions, in accordance with the obser- 
vation made in other localities, that, wherever colonial stocks 
are preserved, the water whs not in fast motion during the de- 
position of the sediment. 
Following the creek along the left bank over the " High 
falls" we meet with the exposure which furnished the rhab- 
dosomes and colonies of Dipluip-aptus raedemaniii* and the 
sessile specimens of Vffnalaria gracilis. \ The shales are here, 
on account of a dyke which approaches the creek from east, 
in too steep a position to furnish conclusive readings of the 
directions of the numerous graptolites. Yet the locality is of 
great importance because it exhibits large surfaces complete^ 
ly covered with the parallel arranged small rhabdosomes of 
the above mentioned graptolite. The continued action of the 
directing force during the deposition of many layers is, there- 
fore, here more strikingly exhibited than anywhere else. The 
most important layers are the following: 
Layer of shale with numerous brokeft fragments of a bryozoan {Stic- 
topcrreUa), all parallel. 
Layer with colonies of D. ruedemanni, no direction. 
Two layers, densely covered with rhabdosom.PS of D. ruedemanni, all 
parallel and pointing east with the sieular ends. 
Layer with fragments of ti-ilobites and bryozoans and shells of Eiido 
ceras. Parallel arrangement, the apices of the Eiidocera>i shells point- 
ing east. 
Layer with rhabdosomes of D. ruedemanni iu great multitudes: all 
sieular ends point east. 
The fossils in these layers all show the same direction, 
which, under the supposition that the strata have only been 
tilted and not twisted, is in the neighborhood of E. N. E. 
It is worth mentioning that in the same locality, a little 
higher in the series of interstratified shales and limestone 
banks, a layer is exposed which shows the rhabdosomes of />. 
ruedemanni pointing west, instead of easi, as in the other 
layers. The direction is N. 40-50 degrees W. As the ex- 
*Cf. Amer. Jour. Sci., 1895, p. 453; Jour, of Geology, 1896, p. 307. 
|Am. Geol., 1896, vol. XVII, p. 1.59, and vol. xviii, p. 65. 
