FEW astronomical books have acquired or have deserved a wider reputation than has been accorded to the “General Astronomy” of Prof. C. A. Young, and all who have profited by the accuracy and completeness of that work “will regret to hear of the death of the distinguished author, who identified himself so closely with tire progress of the Princeton Observatory (N.J.). Other popular works, such as “The Sun,” have been well received, for Prof. Young's qualities as a writer and teacher were well known and acknowledged. But though accident may have given him distinction as a writer of elementary works, of which his long career as a teacher had shown him the necessity, he had far greater claims on our respect and gratitude. Son of a distinguished astronomer, Dr. Ira Young, of Dartmouth, he was early and severely trained in mathematics and astronomy, and for fifty years he gave of his best to forward the interests of the science he loved. Moreover, his activity synchronised with the recent development of physical astronomy; he was one of the pioneers of solar spectroscopy, and his continued and successful researches in various directions entitle him to ample recognition.