BOOKS RECOMMENDED. 107 



PALEONTOLOGY. Price. 



L. Lesquereux. Coal Flora of Pennsylvania. 

 3 vols. With atlas. Pennsylvania Geo- 

 logical Survey. ..... 



G. A. Mantell. Petrifactions and their Teachings $2 oo 29 



H. A. Nicholson. Ancient Life History of the 



Earth 2 oo 2g 



Paleontology. . . . . . . 5 oo 79 



S. H. Scudder. Fossil Butterflies of North 



America. ...... 26 



L. Ward. Sketch of Paleo-botany. fifth An- 

 nual Report of U. S. Geological Survey. . 



PHYSICS. 



N. Arnott. *Elements of Physics. . . . 3 oo 29 



*Park Benjamin. . . . . . . 2 oo 47 



L. Blodgett. *Climatology of United States. . 5 oo 61 



A. Daniell. ^Text-book of Physics. . . 3 50 42 



A. Ganot. *Physics. . . . . . 5 oo 51 



E. A. Dolbear. *The Art of Projecting. New 



edition. . . . . . . . 2 oo 20 



R. F. Glazebrook. *Physical Optics. . . 2 25 29 



R. F. Glazebrook and Shaw. *Practical Physics. 2 25 29 

 W. R. Grove. *The Correlation of Physical 



Forces. . . . . . . . 2 oo 29 



T. H. Huxley. Physiography. (Very valuable). I 80 42 



A. Irving. A Short Manual of Heat. . . 75 40 



Fleeming Jenkin. Electricity and Magnetism. . I 50 29 



A. M. Mayer. *Sound, $1.00 ; *Light. . . i oo 29 

 C. W. MacCord. Kinematics of Machines. . 5 oo 50 

 J. C. Maxwell. *Theoryof Heat. . . . i 50 29 



Electricity and Magnetism. Oxford Claren- 

 don Press. 2 vols. . . . . 8 oo 42 

 T. C. Mendenhall. A Century of Electricity. . i 25 19 

 Thos. Nolan. *The Telescope. ... 50 48 

 R. H. Scott. *Elementary Meteorology. . . 79 



* Weather-Charts and Storm- Warnings. . 2 oo 40 



B. Silliman. *Principles of Physics. . . 3 10 39 

 Balfour Stewart. *Conservation of Energy. . i 50 29 



Physics 45 29 



S. B. Thompson. Elementary Lessons in Elec- 

 tricity. i 25 42 



