The ^American Science Series. 



Newcomb & Holden's Astronomy. Advanced Course. 



By Simon Newcomb, Professor in the Johns Hopkins University, and 

 Edwards. Holden, Director of the Lick Observatory. xii + Siz PP. 

 8vo. 



The portions in large type form a complete course for the 

 use of those who desire only such a general knowledge of the 

 subject as can be acquired without the application of advanced 

 mathematics. The portions in small type comprise additions 

 for the use of those students who either desire a more detailed 

 and precise knowledge of the subject, or who intend to make 

 astronomy a special study. A college text-book. 



Newcomb & Holden's Astronomy. Briefer Course. 



X + 366 pp. i2mo. 



Aims to furnish a tolerably complete outline of the as- 

 tronomy of to-day, in as elementary shape as will yield 

 satisfactory returns for the learner's time and labor. It has 

 been abridged from the larger work, not by compressing the 

 same matter into less space, but by omitting the details of 

 practical astronomy, thus giving to the descriptive portions a 

 greater relative prominence. 



Chamberlin & Salisbury's Text-books of Geology. 



Advanced Course and Briefer Course. 



By Thomas C. Chamberlin, Head Professor in the University of 

 Chicago, and RoLLiN D. Salisbury, Professor in the University of 

 Chicago, [/k preparation.'] 



The general scope and character of these works may be 

 inferred from the corresponding " Courses " upon other sub- 

 jects in the series. A well-balanced treatise, planned for 

 college work and suited in one edition to higher, and in the 

 other to lower-class men, thoroughly modern in matter and 

 method, leading naturally to independent research, and dis- 

 tinctively American in its selection of illustrative facts, — such 

 a treatise may be confidently expected. Special pains will be 

 bestowed upon the pictorial illustrations. 



