_caremvemsiaaees 
INDEX TO VOL. XXI. 
Papers and Communications. 
Asznort, Miss Hreuen C. D. Page. 
An Analysis of the bark of Mouquiera splendens.. 6+ + oe ee eee eo VOL 
Autrn, H. | 
On a case of human congenital malformation. . « . 6+ +6 6+ + + «880, 413 |! 
AsHBURNER, C. A. 
On Kintze’s flre-damp indicator.......+.+. LEC Ce « 283 | 
hs Verbal GomMuUnGatIONG . 660 66) yin 6 ee bale e ee Wye ee ee 6 0 6 BG) 480 j 
| On the Natural Bridge in Virginia .......6-6-. Ce eee ete vibe eNO, Coe 
Buazrus. | 
| Verbal communtoation... ccc vce w se eee ete ote es ge AOk , 
: Buiopenrr, 
i Verbal communication... cer sc cee tec cee ee ee ee we 0 Med | 
1 Branner, J. C. 
i The course and growth of the. fibro-vascular bundles in palms .. . 281, 459 | 
i Brinton, D. G. 
i A grammar of the Cakchiquel language of Guatemala . . + « » « »« . 800, 345 | 
t On the Xinka Indian language, &o 2... sc eee te we eo ee 8 we COU | 
Ri Brockway, C. B. 
Thermometric Observations in Quito, Houador . .. . 6 6 + + 6 © « « 675, 676 q 
| 
CaRuu, J. F. 
Communication on the wrong placing of Hurypterus pennsylvanicus . 450, 451 
Cuasn, P. HE. 
| Photodynamic notes No, VIII. ..c.0 ee ee eee eee wee ew oo 10, 210 i 
| Photodynamio notes No.IK. 1... ee te te ot 6 tw 0.4 B08, 690 
CLaypour, BE. W. | 
| The Perry county faults. .... Gy EN ER te 6G aut Sh EBA ENG TS) iW 
4 Note on a relic of the native flora of Pennsylvania . 6 6 66 + ee wo » 226 | 
On the equivalent of the N. Y, Portage in Pennsylvania... ..... «230 i 
Note on the Genus Renssaleriain the Hamilton group in Perry Co., Pa, 285 q 
» Note on a large crustacean from Catskill group of Pennsylvania... . , 236 i 
| Corn, E. D. | 
| COMMUNICATION B60 6 a ule Mim es 800, 807, 419, 422, 426, 487, 611, 612, 615, 678 | 
Letter from Little Missouri, Dakota... 6+ ese eee ee 8 ebro 6 MnO | 
Distribution of the Loup Fork formation in N. Mexico... .... «« . 808 
Second addition to the knowledge of the Puerco epoch , «1. + eee + « B09 
On the Trituberculate type of tooth in the mammals... .. «24+. . 824 i 
Synopsis of the species of Oreodontid@. ... . PEW ele Muse aoe ener DOS 
V] On the structure of the skull in the Elasmobranch Genus Didymodus . . 572 
On the Batrachian and Reptilian Fauna of Mexico and ©, America, . . 702 i) 
On the genealogy of Vertebrata and the theory of degradation, .... . 703 H 
op | 
