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^xi}t5 



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Y the provisions of the wiii of the lae Vr. Witliatn Johnson Walker two prizes are annually offered by the 

 rio.'.tOi. ^ijciety ot .Natural History for the best memoirs written in the Eneli h language, on subjects 

 proposed by a committee appointed by the Council. 

 TT,.ri ^ *°^.;"\best memoir presented a prize of sixty dollars may be awarded; if, however, the memoir be one of 

 marked roem, the amount may be increased to one hundred dollars, at the discretion of the Committee. 

 *or the next best memoir a prize not exceeding fifty dollars may be awarded, 

 ^izes will not be awarded unless the memoirs presented are of adequate merit. 

 I he competition for these prizes is not restricted, but is oPen to all. 

 Attention is especially called to the following points :- 



n^T,i*.^^k« i" ^^?^ ■ memoirs are to be based on a considerable bodv of original and unpublished work, accom- 

 panied by a geneial review of the literature of the subject. - e P 



r\^u tW ^=c ^'i ^"^ '" ^^^ memoir which shall furnish proof of the identity of the author shall be considered as debar- 

 ring the essay Irom competition. 



in compel !tion^1o7r?e*d ^^ ^"^"^ ^° niemoirs showing intrinsic evidence of being based upon researches made directly 



with nl^of^^ "^^ '"^™°'^-.^"^' '^'^ accompanied by a sealed envelope inclosing the author's name and superscribed 

 Inrn .^?Vh corresponumg to one borne by the manuscript, and must be in the hands of the Secretary on or before 

 April I ot the year for which the prize Is offered. 



5. The Society assumes no responsibilitv fornuHicationof manuscripts submitted. 



I. Aa experimental stcdy of inheritanS^afia^SJaftsT^^ \^<i9> 



% A sfuXof JnLlV"^' "l?'^ ^'^"'^^ °/ close-breediQg and cross-breeding in animals or plants. 

 . v!,l"^ i^?'"?^' '^«*<^'^°"S in relation to habit formation. 



\ pS^S^te^^'^" r'.^^^l* "'^ ^^^-^x^^ species of plants with respect to leaf variation. 

 5- f,?^''^^"°" aiid related phenomena in a phenogamous plant. 



7 A Dh v^^^^^'J'rfni'^'' °£ \ '''^?'^^ seasonal growth is represented in the winter bud ? 



a" A Sr^M^m !n^t ^ ^" f * '*"? *°''™^ ^"^ processes discoverable along a varied shore line. 

 o. A prouiem m structural geology. 



large ar?a. ^VSm JdTy ^cSnf^So^^ "''*' ^ "^" *° determining the different conditions obtaining at one time over a 



geographic study of a district of variea leaEures, presented as invoh mg the natural relations of inorganic and organic 



a. A petro^raphic study of a district of crystalline rocks. 

 3. A paragenetic study of a mineral localit\-. 



X £d;';°.'^n',riv°?:V^'^^°^.^^*"^^ reproduction in plants. 



\ cSwbSoS ti' S f """^fii* th^lophjte. with especial reference to sporogenesis. 



-, ThZ^ . *^ ^^^ knowledge of reponse in plants. 



2" -Thf «f i^ govemmg orientation in animal responses. 



9.' The rcdSh'U^Vl^r'' P""'r^' T^. ^«^°«dary sex characters in animals. 

 9. ineactiwties of the animal body in relation to interna! secrettons. 



Boston Socisrv of Natural History 

 Boston, Mass., U. S. A. 



GLOVER M, ALLEN. Secretary 



IT 



An Indispensable Book for Students of 



in Plant 



tany 



1 



SECO.VD EDITION— ILL US TRA TED 



')■ Charles J. Chamberlain, Ph.D. 



.director in Botany in the University of Chicago 



"^"for l\r?L '°°*?'''^ directions for collecting and preparing plant material 



«hn n .e o^'.''- '°l"'i^^"^'"- ^' '^ ^^^^^ "P°" ^ <^o««^ in botanical micra- 

 Free-S <,lrtr '^K^ trst complete manual to be published on tljis subject. 



method are tt^w"^' J"" ?f '^f'^ °'"'''°^' *^ «"«<!!" ^'^*od. and the glycerine 

 mSS rch^epamts'L I"^l-'«'=b/P«- specific directions are fiven for 

 kir-dom from rt,?A? ^[* °^^^d by those who wish to study the plant 



^^t^JlT }}\^^^t''^ }° }^^ fl°^"^ng plant. Special attention is paid to 



formulas are " ^ ' — ^~ 



J. In preparij 



Prr-e^s'orKlXv 2^7^ '^^ ^^^^^^ m the science since the book first appeared. 

 A gae^d F^.f S k ^°' '. °""^ '^'^ ^'^^^'""^ reproductive phases in the 

 more =- .^orfL W " ''°'^'""? •" ^ P^«'<^^i *^^. ^d to general much 

 fte Vaietian .,^,i^r^ ^'T.'° ^""^t^g °«terial. New chapters deal with 

 m^X:^'^'^"' ^0? the ' ."^'"°'=^«-'^l ^«ts, free-hand sections, special 



vn pp., 8vo, cioth, net. $2.25 ; postoaid, $2-39. 



T 



TY OF CHICAGO P 



