"Of the highest order of interest. The author has made studies and drawings of the insects which can be found on any old farm, and has made discoveries which give him a high place among entomologists."—Chicago Advance.
"May be said to be a perpetual passport to the minor kingdoms of nature. It is the work of an accomplished and practical naturalist who is hand and glove (so to speak) with the populace of the leaves and fields, the woods and waters."—N. Y. Mail and Express.
"Dr. McCook has already achieved an enviable reputation by his valuable contributions to science, and in this charming book, so full of amusement and instruction, he has given us another proof of his being one of the most clear, concise and attractive writers of the day."—Christian at Work, N. Y.
"It is well known that Dr. McCook is one of the few ministers among us who have made a specialty of studies in the natural sciences, and that he has in this line built up an enviable reputation beyond our church and beyond our land."—Presbyterian Journal, Phila.
"The illustrations are a noteworthy feature of the book. Many of them are admirable illustrations of their subjects, while to these have been added a number of comical adaptations from the pencil of Mr. Dan Beard."—Illustrated Christian Weekly, N. Y.
"The scientific accuracy, the good illustrations and simple descriptions make it a valuable book for amateurs and a good book of reference for advanced students in that department of natural history."—Springfield Republican.
"The author is not a mere compiler of other men's labors; he is a close and patient observer, and his book has an original value."—N. Y. Home Journal.
"He is rarely qualified for the task."—Troy Daily Times.
"Scientifically, Dr. McCook is authority on all these matters."—Presbyterian, Philadelphia.