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possibility of applying this principle in each and every instance, a fact which is very much regretted. For those who wish to continue further research the remark will not come amiss that the University of Chicago possesses a large part of the literature here mentioned, and that its library includes a splendid collection of German theological magazines.

That these essays are here presented in readable English is due to the labors of the Revs. E. Groth of Casselton, N. D., and Emil H. Rausch of Waverly, Iowa, who kindly furnished the English copy.