TABLE OF CONTENTS. 
Page 
ERD ne pe inrs. Wan 8, t ae urvis ooo tn ev Sole Pit iwiee fle voted one Goel 71 
Do SIPS SPN Cale os Sree oI Aaa ion ition Pie an 73 
RP TCECA CCS A TI AICO o. i28 Sita tos oie ce os Sue erie bw alee De 75 
Be Rete ier LOUD LAINS aries ar te a s'F orate hea slstee yok, os 77 
EO RICT I RRR eter cy re cd ily, iy eM MeO C SS Gas 4 ecere 80 
MMM TOCLC LOM Tey Lice tt. Motes ba ior a Me eee ans tt ule 99 
BETES U EDA festa Je Cue OR ale eectte ae Pene ty Meee Mt re ana Sees yas 100 
Dy SUNT Le Gh ON CI AO le Be ea i PS Dace tS LOU SON UE 103 
Meee Ham CALA IE Ls fom es CEES sc caine felen he Snes tons ote a Irs 
ROMER ED RRA Set ae tee Oe ee ac alg hy Cleve braid cacao bea AT oe 119 
LIST OF ILLUSTRATIONS. 
Opposite 
Plate. page. 
VII. Popocatepetl and Ixtaccihuatl from the Valley of 
Cay eee er a eds tat ae ye dae (crepe ee (Frontispiece) 
MirbeeetioPedrepalsnear san Angel... oi .c. ces hs ea lewtes 76 
Pee ODOLALCDECE ITO) AMECA.:, 0 is. csc ev ive es a Cand ees 80 
Boma ets One of. ropocatepeth. co. so ce vase we ee ee g2 
RM rate OL LOpGcatepetlt sats hi) .0% hak ee cs ecole eas 94. 
err astern VV all of Cratere ro i2od Lowa wb a viele we he hele. 96 
emer ataccintatl from AmeCa i.e)... oe veeice son vee bee 103 
XIV. Middle and Southern Peaks of Ixtaccihuatl showing 
BeOr it) Lita zy Cr LACIE (05 ai al! Tlf ager ere wis ate, Suds IIO 
XV. Porfirio Diaz Glacier from old terminal Moraine .... 112 
Peemmeiesiittace Of borurio Diaz Glaciér, WAN cee ee le II4 
Maeve Old Moraines,Porfirio. Diaz Glacier: . «ce. oe oes 116 
XVIII. Contour map of Popocatepetl, Ixtaccihuatl and 
VBE CTL ate ocd aah AE ee Aantal ARI RE ERRNO ae OE Ma nO 122 
Fig. Page. 
ME TIECATICIIYOL: ELATTACAS = conte cic) ao Pree ecb otal oe oes 89 
2. Gathering.of Bowlders by a Crevasse............... II4 
