6 SCIENCE. 



Illustrations of Geology and Geography. 



For Use in Schools and Families. Consisting of twenty-five large photographs 

 and an equal number of colored plaster models. By N. S. Shaler, Professor oi 

 Paleontology, assisted by Wm. M. Davis, Assistant Professor of Physical Geogra 

 phy, and T. W. Harris, Assistant in Botany, in Harvard University. Price for 

 the set of 50 pieces, $100. 



Appended to each photograph and model is a description of the 

 important point or structure illustrated, with occasional small dia- 

 grams to show the detailed structure of the field. 



Guides for Science Teaching. 



Published under the auspices of the Boston Society of Natural History. 



INTENDED for the use of teachers who desire to practically 

 instruct their classes in Natural History, and designed to supply 

 such information as they need in teaching and are not likely to get 

 from any other source. 



No. I. About Pebbles. 



By Alpheus Hyatt, Proiessor of Zoology and Paleontology in the Massachu- 

 setts Institute of Technology. Paper. 26 pages. Price, 10 cents. 



An illustration of the way in which a few common objects may be 

 used to cultivate the powers of observation, and to teach interest- 

 ing lessons in elementary natural science. It contains all the sug- 

 gestions necessary to enable any teacher to make the lessons a 

 complete success. 



No. II. Concerning a Few Common Plants. 



By George Lincoln Goodale, Professor of Botany in Harvard University; 

 Paper. 61 pages. Price, 15 cents. 



Gives a method by which a few of the more important and easily 

 observed facts can be taught respecting the structure, growth, and 

 work of plants. It calls attention to the manner of preparing the 

 objects selected for elementary study, and furnishes suggestions as 

 to the way in which they can be turned to good account. The appli* 

 ances recommended are of the most trifling cost. 



