486 Capt. H. W. Feilden on the Post-tertiary Beds 



Station No. 13. Port Foulke, Greenland, lat. 78° 20' N. 

 A bed over 100 feet in thickness, lying across a valley, at an 

 elevation of 300 feet, cut through and exposed by a water- 

 course. Composed of rounded fragments and boulders of 

 granite, gneiss, hornblendic gneiss, basalts, and sandstones, 

 apparently the moraine of a glacier, which must once have 

 submerged at this spot. A fine yellow sand occupied the 

 interstices between the rocks. This sand was full of the shells 

 of Saxicava rugosa, with both valves connected, Mya trun- 

 cata, and very sparingly Cardium islandicum and Tellina 

 calcaria. 



Station No. 14. A deposit of stiff clay and pebbles, occupy- 

 ing a depression on the summit of a gneissoid island near Cape 

 Sabine, Ellesmere Land. Elevation 150 feet, most of the 

 testaceous remains fragmentary, consisting of Mya truncata, 

 Saxicava riigosa, and Astarte borealis. 



Station No. 15. Twin-Glacier Valley, Hayes Sound, Elles- 

 mere Land. About two miles from the shore, and about the 

 same distance from the edge of the glacier. The stream 

 issuing from the glacier there cuts through beds of fine yellow 

 sands, resting on dolomitic limestone, of probably Silurian 

 age. These beds contained few boulders, but were replete 

 with valves of Mya t7'uncata and Saxicava ruyosa, Tellina 

 calcaria being very sparingly scattered through the beds. 

 The section which 1 examined was remai'kably interesting, as 

 it presented an excellent example of contorted bedding, the 

 layers of sand being irregularly deposited and crumpled up 

 by the pressure of berg or floe ice. 



Station No. 16. Victoria Head, Bache Island, lat. 79° 14' N. 

 Terraces from 100 to 200 feet above sea-level, resting on grey 

 fossiliferous limestone of Silurian age. Valves of Mya trun- 

 cata and Saxicava rugosa alone found scattered along these 

 terraces. 



Station No. 17. Cape Harrison, western side of Franklin- 

 Pierce Bay, Grinnell Land, lat. 79° 24' N. From the shore 

 to an elevation of 300 feet rose a series of terraces, which slope 

 at an angle of 30 to 35 degrees. These terraces were com- 

 posed of the debris of the limestone cliffs with clay ; valves of 

 Mya truncata and Saxicava rugosa were alone found. In 

 places where these terraces were bi'oken and the material swept 

 away, the basement rock (a hard Silurian limestone) was 

 marked with ice-scratchings. I could not at the time account 

 for these scratch ings on the basement rock and on some of the 

 pebbles in the terraces ; but later on we obtained demon- 

 stration that shore-ice, acted on by the rise and fall of the 

 tide, picked up the material from the bottom and scratched the 



