"For amateur use this book is easily the best treatise on astronomy yet published."--Chicago Herald. "'Astronomy with an Opera-Glass' fills a long-felt want."--_Albany Journal_. "No intelligent reader of this book but will feel that if the author fails to set his public star-gazing the fault is not his, for his style is as winning, as graphic, and as clear as the delightful type in which it is printed."--_Providence Journal_. "Mr. Serviss neither talks over the heads of his readers nor ignores the sublime complexity and range of his themes, but unites simplicity with scholarship, scientific precision with life-long enthusiasm, and a genuine eloquence with rare touches of humor. Considered as a product of the publishing industry, the book is elegance itself."--_The Chautauquan_. New York: D. APPLETON & CO., 72 Fifth Avenue. * * * * * D. APPLETON & CO.'S PUBLICATIONS. _OUTINGS AT ODD TIMES._ By Charles C. Abbott, author of "Days out of Doors" and "A Naturalist's Rambles about Home." 16mo. Cloth, gilt top, $1.25. "A charming little volume, literally alone with Nature, for it discusses seasons and the fields, birds, etc., with the loving freedom of a naturalist born. Every page reads like a sylvan poem; and for the lovers of the beautiful in quiet outdoor and out-of-town life, this beautifully bound and attractively printed little volume will prove a companion and friend."--_Rochester Union and Advertiser_. _A NATURALIST'S RAMBLES ABOUT HOME._ By Charles C. Abbott. 12mo. Cloth, $1.50. "The home about which Dr. Abbott rambles is clearly the haunt of fowl and fish, of animal and insect life; and it is of the habits and nature of these that he discourses pleasantly in this book. Summer and winter, morning, and evening, he has been in the open air all the time on the alert for some new revelation of instinct, or feeling, or character on the part of his neighbor creatures. Most that he sees and hears he reports agreeably to us, as it was no doubt delightful to himself. Books like this, which are free from all the technicalities of science, but yet lack little that has scientific value, are well suited to the reading of the young. Their atmosphere is a healthy one for boys in particular to breathe."--_Boston Transcript_. _DAYS OUT OF DOORS._ By Charles C. Abbott. 12mo. Cloth, $1.50.