LXV. Scottish Geology: Its Proofs and Problems

Open File Report LXV – Geology of Chippewa County, Michigan - VerWiebe – Page 1 of 33 GEOLOGY OF CHIPPEWA COUNTY MICHIGAN

The earliest comprehensive work on the geological formations in this county was done by Carl Rominger. He published his findings in volume 1 of the Geological Survey of Michigan in 1873. It appears from a careful reading of this report that Rominger visited practically every one of the isolated outcrops on the mainland portion of the county, and a good many of those located on the islands which...

Proofs for Satisfiability Problems

Mapping the Planets—Geology Stakes Its Claim

Planetary geoscience had very little presence in GSA’s first century, but it has a long history in GSA publications. Beginning with the Moon, the transformation of the planets and their satellites from astronomical objects into geological worlds has taken place largely by geologic mapping using telescope and spacecraft imagery and by the application of stratigraphic principles to these new data...

Generality of proofs and its Brauerian representation

The generality of a derivation is an equivalence relation on the set of occurrences of variables in its premises and conclusion such that two occurrences of the same variable are in this relation if and only if they must remain occurrences of the same variable in every generalization of the derivation. The variables in question are propositional or of another type. A generalization of the deriv...

Lxv. Note on Knoop's Test for Histidine

IN performing this test Knoop [1908] adds bromine water to the solution to be tested until there is just a very slight excess. On heating, the excess bromine disappears and in the presence of histidine a brownish red colour is developed; if the latter is in sufficient concentration a dark precipitate settles out. The solution to be tested should be slightly acid. The only substance other than h...