SCIENCE. 



II 



A Practical Analysis of Fifty Plants. 



By Miss S. Minns, Boston, Mass. 

 traduction price, oo. 



Cloth, ooo pages. Price by mail, oo. In- 



ENCOURAGED by the great favor with which Colton's Practical 

 Zoology has been received by science teachers, and in response to 

 numerous calls and suggestions, we have published this botany, which 

 follows out the same plan. 



It contains introductory chapters on morphology, and suitable direc- 

 tions for analysis, giving special attention to the more puzzling and 

 difficult orders. 



It is intendedjo teach beginners, not only to analyze plants, but 

 to compare them and to draw deductions from this comparison. It 

 explains in detail the structural peculiarities of a plant in a way which 

 the scope of the larger manuals for analysis necessarily cannot admit, 

 thus serving as a supplement to them and guiding the student in 

 laboratory practice. 



The Earth in Space; or, a Fortnight in 



Astronomical Geography. By Edward P. Jackson, Instructor in Science at the 

 Boston Latin School. Cloth. Illustrated. 80 pages. Price, 30 cents. 



TO many persons otherwise well informed, this subject is an ever 

 perplexing mystery. Familiar with the topography, geology, and 

 political history of the world they inhabit, they know little of it as a 

 unit, in its relations to other worlds. This book presents, in a few 

 simple lessons, the main features of this important branch of Geogra- 

 phy. It is adapted to grammar and intermediate schools. 



Following is the Table of Contents : How we know that the earth 

 is spherical ; How we know that the earth is flattened at the poles ; 

 Latitude and Longitudes Zones j Dimensions and distances : How 

 we know these ; Gradual changes in light and heat during the day 

 and the year ; How we know that the earth rotates ; Apparent daily 

 motion of the heavens ; How we know that the earth revolves ; The 

 Inclination of the axis : The sun's declinations ; The change of 

 seasons ; The variation in the length of night ; Appendix. 



C. F. King, Sub-Master of Lewis 

 School, Boston: I consider it a most valu- 

 able treatise on the subject. I have been 

 looking for years for such a book. 



Jas. Sawin, Master of Grammar 

 School, Providence: Delighted with it. 

 I have never read anything on the subject 

 so short, simple, and interesting. 



