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THE CRAYFISH: AN INTRODUCTION TO THE STUDY 

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MAN'S PLACE IN NATURE. 12mo. Cloth, $1.25. 



ON THE ORIGIN OF SPECIES. 12mo. Cloth, $1.00. 



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MANUAL OF THE ANATOMY OF VERTEBRATED 

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LAY SERMONS, ADDRESSES, AND REVIEWS. 12mo, 



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CRITIQUES AND ADDRESSES. 12mo. Cloth, $1.50. 



AMERICAN ADDRESSES; WITH A LECTURE ON THE 

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PHYSIOGRAPHY: AN INTRODUCTION TO THE STUDY OF 

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HUXLEY AND YOUMANS'S ELEMENTS OF PHYSIOL- 

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