ON the whole, Mr. Benny's book is one that we would heartily recommend to the class of students he had in mind while writing it. It is not a book for beginners; it is not a book for mathematical ...

SOME months since we noticed Prof. Petersen's “Theorie der algebraischen Gleichungen,” and now we desire to draw attention to two more works by the same writer. The former, in its Danish garb, ...