l6o THREE KINGDOMS. 



spectacles in " Neighbors with Wings and Fins," " Some Curious 

 Flyers, Creepers and Swimmers," "Neighbors with Claws and 

 Hoofs," " The Animate World," etc. 



D. Appleton & Co. , No. 3 Bond Street, New York, will send 

 their complete catalogue of publications to any member of the 

 Association on request. 



"Insect Lives; or, Born in Prison," is the title of a most 

 delightful book for young people, by Mrs. Julia P. Ballard, a 

 copy of which should be in the hands of every member of the 

 Agassiz Association. Every boy and girl who gets hold of it will 

 at once begin a careful investigation of the habits and manners of 

 all the caterpillars and butterflies which come within reach. Mrs. 

 Ballard has a rare faculty of interesting her readers and imparting 

 a vast deal of information, while she is disclosing the secrets of 

 the prison-houses of these wonderful little creatures. If you are 

 at all interested in the curious history of moths, caterpillars, butter- 

 flies, and other members of their family ; if you want to know 

 where they come from, how they live, what they do and where 

 they go, then you want to get this book without delay. The 

 book is handsomely and beautifully illustrated, and may be had 

 of all booksellers, or will be sent, post-free, by The Writers 

 Publishing Company, 21 University Place, New York, on receipt 

 of $1.00. 



No American scientist has ever left on record so large a list of 

 standard works in his chosen department as did the late Professor 

 Asa Gray on the subject of botany. His " How Plants Grow" 

 remains at the present time as it was when first issued, the par 

 excellence of elementary text-books. It is probably more largely 

 used now than ever before, and this despite the fact that it has 

 had almost numberless competitors which have arisen from time to 

 time, and have fallen into merited disuse, while the " How Plants 

 Grow" still remains apparently as fresh and popular as ever. 



"Gray's Lessons in Botany, Revised," the last work issued be- 

 fore the author's death, is of a higher grade than the "How Plants 

 Grow," but perhaps equally desirable in its way. This book, with 

 the added "Field, Forest and Garden Botany," constitutes the 

 well-known " School and Field Book," which is the book specially 

 adapted for high schools, academies, and seminaries of the first 

 class, and for individual learners not pursuing the study of botany 

 as a specialty. For such students, there are the "Gray's Struc- 

 tural Botany " and " Goodale's Physiological Botany "these two 

 being parts of " Gray's New Botanical Text-book," in four vol- 

 umes, the concluding volumes having been left incomplete by the 

 death of the author. These, however, it is understood, will be 



