CONTENTS. 
Pa MA ME OO MMO Ce Lh a SU ial aera A ait 
a i ae has ade 
List or Members. Revised to December BA LOIS 
1. Parrons. 
2. Honorary MEMBERS. 
3. AcTIvE MEMBERS. 
BRBTRACT OF FUISTOBY er ee er ee Sa ees 
Recorp. January 1, to December 31, 1910.......... 
Papers PuBLIsHED. January 1, to December 31, 1910: 
1. Francis E. NrpHer.—On the Nature of the Elec- 
tric Discharge. The One-Fluid and the Two- 
Fluid Theories.—Plates I-X.—Issued Febru- 
CPV Te ob ea ilk Wi ae ew ke tie Cale 
2. Puitip Ravu.—Observations on the Duration of 
Life, on Copulation, and on Oviposition in 
Samia Cecropia Linn.—Issued February 26, 
RR se OR Cer aa ra aiata els Wuiw aoa 
3. Frank J. Puriiips.—Hail Injury on Forest 
Trees.—Plates XI-X VII.—Issued March 10, 
RE es hw ue esa hin Me ea ate Mk ek aie 
4, Francis E. Nrpuer.—On the Nature of the Elec- 
tric Discharge. The One-Fluid and the Two- 
Fluid Theories.—Plates XVIII-XXV.—lIs- 
WO PUI BOR cae whe 6 celine lain ee 
5. JouHn K. Srrecxer, JR.—Studies in North Amer- 
ican Batrachology. Notes on the Robber 
Frog (Lithodytes latrans Cope).—Issued 
PG OR cya wicca ens shes 
6. Apotr Att.—On the Histology of the Eye of 
Typhlotriton spelaeus from Marble Cave, Mo. 
—Plates XX VI-XXXIV.—Issued October 12, 
PNP Oe Woe oy sla ale sk) wi wianueees 
21 
49 
57 
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83: 
