intario, 409. 

 evensotj, J. J., Geological Examina- 



! •■ _: :■■ 



Thiesen, on calibrating 



Vision, see Optics. 



Warming, E., Pamilien Podostemacefe, 





Watson, S., Contributions to 





li ) 1 1,1 1-m-ical notes, 475. 





Fossils of' New Mexico. 11 '."). 





the Ptica formation, 278. 



ora from the Strait 



■i';i and the earth. 316. 



Y 



Tictj.'ii. Astn.imniisches .T :i 1 irl >i i- -U. 23:.. 



Young. A. A., crystalline forms in the 



7'n, //,,: /</,/,., ./.. niiVMeal notices. CI, 14 I. 



sands of the Potsdam sandstone. IT. 



286, 392. 





the Thomson effect. 379. 



z 



- ■ 



Zoology — 



T^S, Ton fog-signals, 470. 



Ccpl, dun,, an ,.; \,--. , 



, . ... -■ ,- i ■ 



Heteropora, recent, Whit>>i <■«. 2 7!». _ 



u 



Underwood, L. M., Our Native Ferns 





and their Allies. 156. 





T'nits. electrical, 62, 310. 







See further under GEOLOGY. 



Page 239, line 1 



Pa-. :\v> r,rl 



from foot, for Amherst College read SwnW College, 

 t of the ephemeris of t 





