NUMBER V. 



Art. XLVL— On the Solar Corona ; by C. A. Young, 



XLVII.— On the supposed Legs of the Trilobite, Asaphus 



platycephalus ; by James D. Dana, 



XLYIIL — Description of some new Fossil Serpents, from the 



Tertiary Deposits of Wyominjif; by (). C. Marsh, 



XLIX. — Contributions to Chemistry from the Laboratory of 



tion of Phosphoric Acid ; bx rii\.:i.i>*E. M. nk«.k. '. 



^^aumee Valley; by (4. K. (in m i;i._ 







Pennsylvania, :5«4?— Report oV the ['m.-i. -- oi' th,' -i itr Cfolofrical 

 Michigan. Alex. Winohell, Di'cctoi. 'n-, _.\,.i, ,u [,i;n.'-n iil coiitiiii 



SaMrocc'i)haEo?'lIiirUin,'"r()i'i: (k>ol<.n^ ot oliio X-to on A'^.'.ph- 

 aiiis.J. I). D.ika: On thp Karth(niak(-.u(Uliu W [> ^U tx \vnHi. :!> 



•■'the C\xy ot CJdf'a^) for 1867. 1S6S and 18G9: Kffect o 

 D^-ils^iind miutriils: V:orro=>ion of lead pipep: Chemical 



