SCIENCE 



Sixth Year. 

 Vol. XI. No. 267. 



NEW YORK, MARCH 16, i{ 



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Editorial . .123 



Mr. Francis Speir, jun., on the Ante-Chamber of Conscious- 

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Bacteriology in our Medical Schools 



H. W. Conn 123 



Chemical Laboratory of the Alabama Poly- 

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One Year of Interstate Commerce Control 



Appleton Moj'gan 127 



Mental Science. 



Morbid States of the Attention 

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Book-Reviews. 



The American Journal of Psychology 



A Text-Book on Roofs and Bridges 



Report of the Commissioner of Education for 1S85-86 



Elizabeth Gilbert and her Work for the Blind 



The Orbis Pictus of John Ames Comenius . 



Modern Theories of Chemistry 



The Art of Projectioji 



The Art of Investing 



Notes and News 

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Effect of Pressure on Ice . 



Vermin-Eaters 



Landing Eskimo Boats 



Dried Heads among the Jivaros 



C. F. L. 



E. Lewis Shtiievant 



O. T. M. 



0. T. Mason 



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PROF. ASA GRAY'S LATEST WORK. 



GRAY'S LESSONS 





BOTANY, 



REVISED; %J^^^ 



OR, THE ELEMENTS OF BOTANY FOR BEGINvVVS AND SCHOOLS. 



Designed to take the place of a former work of the same title, and adapted to hig\4^''^p"des than the " How Plants Grow." 



While in some respects more extended than the work it is made to re- 

 place, it is also more concise and terse. It is intended to ground stu- 

 dents in Structural Botany and the principles of vegetable growth, mainly 

 as concerning flowering plants, as well as to be a companion and inter- 

 preter to the Manuals and Floras. While like a gi-ammar of any 

 language this work abounds in technical terms, they are so introduced 

 and elucidated that they invariably convey knowledge and ideas. 



It is not expected that these technical terms will be committed to 

 memory, but they may be looked up as they are required, and used in 



V ... 

 their proper conn<"ction theiv meaning %vill not be readily forgotten. 



In the present edition of this book the Glossary has been considerably 

 enlarged, and no small number of Latin and Greek words, which form 

 a part or the whole of the commoner specific names, are added for the 

 benefit of students who, from an ignorance of the language from which 

 they are derived, may not readily catch the meaning of a botanical name 

 or term. 



It is believed that the illustrations in this volume, whicli number nearly 

 600, will be fonnd specially helpful and instructive. 



From Daniel C. Eaton, M.A.., Prof, of Botany in Yale University. 



" I have no hesitation in saying that no other elementary botanical work ever issued is to be compared with this Gray's Lessons Revised.' 



Extra cloth, 226 pages, 589 illustrations. Price for Introduction, 94 cents. 



GRAY'S SCHOOL AND FIELD BOOK OF BOTANY. 



This book is made up of the Revised Lessons in Botany, and the 

 Field, Forest, and Garden Botany, and forms the Botanical text- 

 book in most common use in the high schools of the United States. It 



is adapted to beginners and advanced classes wherever the science is 

 taught, and furnishes a hand-book to assist in analyzing plants Jand 

 flowers in field study, either by classes or individuals. 



Cloth, 8vo, 621 pages. Price for Introduction, $1.80. 



Write fo7- new descriptive pa7nplilet of Gray's Botanical Series, containing portrait and biographical sketch of the author. 



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