l^alKer l^rt^es in J^atural l^istorp 



Y the provisions of the will of the laie Dn. William Johnson Walker two prizes are annually offered by the 

 Boston Society of Natural History for the best memoirs written in the Engli h language, on subjects 

 proposed by a committee appoinied by the Council. 



For the best memoir presented a prize of sixty dollars may be awarded; if, however, the memoir be one ql 

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



For the next best memoir a prize not exceeding fifty dollars may be awarded. 



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



The coijipetition for these prizes is not restricted^ but is open to all. 



Attention is especially called to the following points: — 



1, In all cases the memoirs are to be based on a considerable body of original and unpublished work, accom- 

 panied by a general review of the literature of the subject, 



2, Anything in the memoir which shall furnish proof of the identity of the author shall be considered as debar- 

 ring the essay from competition. 



3, I*reference will be given to memoirs showing intrinsic evidence of being based upon researches made directly 

 in competition for the prizes, 



4, Each memoir must be accompanied by a sealed envelope inclosing the author's name and superscribed 

 with a motto corresponding to one borne by the manuscript, and must be in the hands of the Secretary on or before 

 April I of the year for which the prize is offered, 



5, The Society assumes no responsibility for publication of manuscripts submitted, 



SUBJECTiS? FOR. 1008 



I* An experimental study of inheritance in animals or plants. 



9* A comparative study of the effects of close-breeding and cross-breeding" in animals or plants. 



3* A study of animal reactions in relation to habit formation. 



A physiological study of one for several) species of plants with respect to leaf variation. 



Fertilization and related phen mena in a phenogamous plant. 



What proportion of a plant's seasonal growth is represented in the winter bud ? 



A physiographic study ot'ihe forms and processes discoverable along a varied shore line, 



A problem in structural geology. 



A study of one or more geological horizons with a view to determining the different conditions obtaining at one time over a 

 large area, as recorded by sediments and fossils. 



SUBJECTS? FOR 1Q09 



A geographic study of a district of varied features, presented as involving the natural relations of inorganic and organic 



A petrographic study of a district of crystalline rocks. 



A paragenetic study of a mineral locality. 



The conditions controlling sexual reproduction in plants. 



Studies in the life-history of a thallophyte. with especial reference tosporogenesis. 



Contribution to our knowledge of reponse in plants. 



The factors governing orientation in animal responses. 



The relation between primary and secondary sex characters in animals. 



The activities of the animal body in relation to internal secretions. 



4 



Boston Society of Natural History 



Boston, Mass.f U, S, A, 



QLOVER M. ALLEN, Secretary 



II 



'*_*^ -«« *effii5w«^ !* n 



6eometric Exercises 



For Algebraic Solution 

 For Secondary Sctiools 



G. W. MYERS 



Professor of the Teaching of Mathematics and Astronomy 



The College of Education 



WM. R, WICKES E- R. BRESLICH 



Instructors in Mathematics in the University High School 



The University of Chicago 



WHEN CALLING 

 PLEASE ASK FOR 



MR. 



GRANT 



IflCfl! 



r n r -■-■-■- _-i -_- l- - 1 ■■— iJ-x fc i-ia- -t ■ Zh FtI h J | ^ 



T^HE feeling is widespread among high-school teachers of 

 mathematics that time and eftort can be economized by 

 some plan for holding, through the "^econd-year geometry^ 

 the ground made in algebra during the first year. It is 

 thotight by many that, to this end, the most feasible course 

 is to draw the necessary material fronu geometry in the 

 form of problems that are readily adaptable to algebraic 

 formulation and solution. This keeps the algebraic ma- 

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 work. This plan serves the threefold purpose (i) of keep- 

 ing algebraic procedure in continual use, (2) of holding the 

 unity of the geometrical course intact, and (3) of pointing 

 out many connecting by-ways and overlapping districts of 

 the two domains of elementary mathematics. These are» 

 in the main, the thoughts that inspired the compilation of 

 this little book of exercises, 



90 pages, i2mo, cloth; net 75 cents; postpaid 82 cents. 





Address Dept, P 



THE UNIVERSITY OF CHICAGO PRESS 



CHICAGO and NEW YORK 



By SO doing you will be able to 

 obtain the best books of the season 

 at liberal discounts^ Mr* Grant has 

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F. E. GRANT 



23 W. Forty-Second St., New York ^^ 



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