22 



Plane co-ordinate geometry, ed. 3. I : Tod- 

 hunter 0513.2 T56 



Plane co-ordinate geometry, ed. 4. I: Tod- 

 hunter C513.2 T561 



Plane curves in a biaxal crystal. R. T. 



Glazebrook ; .C535.3 G46 



Plane geometry. Asc'n. for improv. of geo- 



met. teach C513.1 As7 



Plane trigonometry. I: Todhunter C514 T5(> 



Planetary theory. C: H. H. Cheyue C521.5 C42 



Polarisation of light. W: Spottiswoode . . .C535.5 Sp6 



Political economy. J : S. Mill C330 M59 



Pomeroy, H: R. Mining manual C622 P77 



Pons en fer. J. Gaudard C624 G23 



Popular astronomy. S. Newcomb C520 N43 



Popular government. H: S. Maine C321 M28 



Popular lectures on scientific subjects. H. 



L. F. Helmholtz C504 H36 



Powell, J: W., director. See U. S. GEOLOG. 

 AND GEOGRAPH. SURVEYS. 



Practical astronomy. E. Loomis C522 L87 



Practical geometry. G: 8. Clarke C744 C55 



Practical hydraulics. S: Downing C627 D75 



Practical mechanics. J: Perry C531 P42 



Practical physics. R. T. Glazebrook and 



W. N. Shaw C530 G40 



Practical physics. A. M. Worthingtou C530 W89 



Practical solid or descriptive geometry. 



J. H. Edgar and G: S. Pritchard. . C513.3 Ed3 



Pratt, J: H. Attractions, etc 0517.3 P88 



Precession of a viscous spheroid. G: H. 



Darwin C551.1 D25 



Preece, W: H:, and J. Sivewright. Teleg- 



? raphy C621.36 P91 



Principles and practice of medicine. L. S. 



Beale . . . C61(> B3<> 



