The colored race, like every other part of our population, needs all kinds of education. It is a sheer fallacy and a grievous wrong to them to hold _all_ of them down to the rudiments of an education, with industrial training. All can not profit by the industrial training any more than all can profit by the higher training. There is no conflict between the advocates of industrial training and the higher education. Both are right. Both are good in their respective spheres. At any rate, it is not necessary to disparage the magnificent achievements of colored persons who have received the higher training to make an argument in favor of training _all_ of them in the manual trades, or to justify their elimination from politics. ANDREW F. HILGER, _Washington, D. C._ SCIENTIFIC LITERATURE. _GEOLOGY._ In accordance with the general results of Mr. G. K. Gilbert’s investigation of recent earth movements in the Great Lakes region--that the whole district is being lifted on one side or depressed on the other, so that its plane is bodily canted toward the south-southwest, and that the rate of change is such that the two ends of a line one hundred miles long, running in a south-southwest direction, are relatively displaced four tenths of a foot in one hundred years--certain general consequences ensue. The waters of each lake are gradually rising on the southern and western shores, or falling on the northern and eastern shores, or both. This change is not directly obvious, because masked by temporary changes due to inequalities of rainfall and evaporation and various other causes, but it affects the mean height of the lake surface. In Lake Ontario the water is advancing on all shores, the rate at any place being proportional to its distance from the isobase through the outlet. At Hamilton and Port Dalhousie it amounts to six inches in a century. The water also advances on all shores of Lake Erie, most rapidly at Toledo and Sandusky, where the change is eight or nine inches a century. All about Lake Huron the water is falling, most rapidly at the north and northeast; at Mackinac the rate is six inches, and at the mouth of French River ten inches a century. On Lake Superior the isobase of the outlet cuts the shore at the international boundary; the water is advancing on the American shore, and sinking on the Canadian. At Duluth the advance is six inches, and at Huron Bay the recession is five inches a century. The shores of Lake Michigan are divided by the Port Huron isobase. North of Oconto and Manistee the water is falling; south of these places it is rising, the rate at Milwaukee being five or six inches a century, and at Chicago nine or ten inches. Eventually, unless a dam is erected to prevent it, Lake Michigan will again overflow to the Illinois River, its discharge occupying the channel carved by the outlet of a Pleistocene glacial lake. The summit in that channel is now about eight