YIGS | 
Mariife y 
PROCEEDINGS 
OF THE 
AMERICAN PHILOSOPHICAL SOCIETY, 
HELD AT PHILADELPHIA, FOR PROMOTING USEFUL KNOWLEDGE, 
VOL. XXI. Aprin, 1883, to January 4, 1884. No. 114, 
TABLE OF CONTENTS. 
PAGE, 
The Tutelo Tribe and Language. By Horatio Hale........-- scan i 
Stated Meeting, April 20... ...ecereeeeeaeeens 45 
Mediseval Sermon Books and Stories. By 7. # Crane..... iasicaes 49 
The Latitude of Haverford College Observatory. By Isaac Sharpless, 78 
On a Crinoid with movable spines. By Henry 8. Williams........+ 81 
The Role of Parasitic Protophytes. By W. WN. Lockington.......... 88 
On the Reversion of Series, and its Application to the Solution of 
Numerical Equations. By J. @. Hagen..... Miele Uiiiels bla via aie ah ve De 
On the Conversion of Chlorine into Hydrochloric Acid as observed 
in the Deposition of Gold by Charcoal. By Wm. Morris Davis.. 102 
Stated: Mecting, MOY Bivee veisescscsavee Oe OsI0))) 
A Brief Account of the more Important. Public Collections of Ameri- 
can Archeology in the United States. By Henry Phillips, Jr...... 111 
Photodynamic Notes, No. VIII. By P. H. Ohase.......e.seeseeees S120: 
Introduction toa Study of the N. American Noctuidae. By A. R. Grote 134 
A Revision of the Lysiopetalide, a Family of Chilognath Myriopoda, 
with a Notice of the Genus Oambala, By A. S. Packard, Jr....- 0 Lie 
Stated Meeting, May 18....0.6.eeceeeeeeeees 209 
Stated Meeting, June 16.....++. 1+. eee Ar vane NE 
Stated Meeting, July 20...+.6.0++0e Se Cnt 212 
Stated Meeting, August 17 .....see.ees waeese | a0 
Letter from Loup Fork. By H. D. Cope.....++se+seeeeee Mice an piainee 216 
Note on Growth in Ice, By Joseph Lesley... .+.2+essereceseeees Wee NAL, 
The Perry County Faults. By 2. W. Claypole.....s..sseeseeevees 218 
Note on a Relic of the Native Flora of Pennsylvania surviving in 
Perry County. By #. W. Olaypole....+-++» Wott wie gah arnt ss caub 226 
On the neesige je of the New York Portage in Perry County, Penn- 
sylvania. By H. W. Claypote......0+++++ CMa Otis ee bre ills 230 
Note on the Genus Rensseleria in the Hamilton Group in Perry 
County, Pennsylvania. By H. W. Claypole....cessserenseees eee 285 
On a Large Crustacean from the Catskill Group “of Pennsylvania. 
By HF. W. Claypole (with a wo0d-cut)..veesversserses Wee Cece oe) 286 
Stated Meeting, October 5......s.sevev evens 239 
Obituary notice of Henry Seybert. By Moncwre Robinson......... «241 
{Continued on 2d page of cover.) 
