522 Scientific Intelligence. 



11 pis. — This good paper summarizes what is known of the suc- 

 cession, physical character, and distribution of the various forma- 

 tions of the Cretaceous period in Alberta. Of great value are the 

 ten paleogeographic maps showing the extent of the western 

 land, the marine, brackish-water, and continental deposits. It is 

 to be hoped that the author will continue his studies northward 

 and present his conclusions as to the extent of the various forma- 

 tions into the Arctic Ocean. c. s. 



6. Wabana Iron Ore of Newfoundland • by Albert Orion 

 Hayes. Canada, Geol. Surv., Memoir 78, 1915, pp. 163, 28 pis., 

 4 text figs. — This excellent report shows that the bedded iron 

 ores of eastern Newfoundland (Bell island) are of early Ordovician 

 age (Arenig), though they have long been considered of Silurian 

 (Clinton) time. The greater part of the work is devoted to the 

 genesis of the iron ores, which were deposited in a shallow agi- 

 tated sea devoid of limestones and igneous rocks. The little 

 lime present in the ore (2 - 5 per cent) occurs in the form of fossils. 

 " The phosphorus of the ore is also derived from the remains of 

 organic life preserved in it. No evidence of diagenetic trans- 

 formation from an original oolitic limestone to an oolitic iron ore 

 has been found and no concentration of iron has occurred since 

 the deposition of these ferruginous sediments. They are primary 

 bedded iron ore deposits, mined to-day in essentially the same 

 condition except for induration, faulting, and the addition of 

 small amounts of secondary calcite and quartz in fault cracks, as 

 when they were laid down " (page 93). c. s. 



7. The Yukon-Alaska, International Boundary, behoeen Por- 

 cupine and Yukon Rivers ; by D. D. Cairnes. Canada, Geol. 

 Surv., Memoir 67, 1914, pp. 161, 16 pis., 2 text figs., 2 maps. — 

 The author describes the living flora and fauna, the topography, 

 geology, and sedimentary sequence of a narrow belt between the 

 Yukon and Porcupine rivers along the 141st meridian on the 

 International Boundary between Canada and the United States. 

 The greater portion of the Paleozoic sequence is well developed 

 here, and as a rule the deposits are limestones and dolomites. 

 Doctor Cairnes is to be congratulated on having brought out con- 

 siderable of the detailed sedimentary sequence. c. s. 



8. The Ordovician Rocks of lake Timiskaming ; by M. Y. 

 Williams. Canada, Geol. Surv., Mus. Bull. No. 17, 1915, pp. 8, 

 1 pi., 1 text fig. — The author records the first finding of Black 

 River limestones with fossils beneath this Silurian remnant of 

 once widely distributed formations. c. s. 



9. Structural Relations of the Pre- Cambrian and Palaeozoic 

 Rocks North of the Ottawa and St. laiorence Valleys; by E. M. 

 Kindle and L. D. Burling. Canada, Geological Survey, Mus. 

 Bull. No. 18, 1915, pp. 23, 2 pis., 6 text tigs.— The authors point 

 out that the abrupt elevation of the Laurentian plateau ("Lau- 

 rentian Plateau escarpment ") above the horizontal lowlands of 

 the Ottawa and St. Lawrence valleys represents a fault line scarp. 

 The early Paleozoic strata are as a rule here faulted down, and 



