CONTENTS. 
Letter of transmittal to Mr. Arnold Hague, by the author .---. ...............22.-..--.--.-- eee 
Letter of transmittal to the Director, by Mr. Arnold Hague .. ..........-...2.2...----.------- vii 
LEREHENES) sco doc,co quod cranes sed Headey 945 go 46550 sacors 06 cancial rere Ss USseonecaraoeeeeeeaneese oe ix 
SMA OW DOSE) coceecacéardocicose ces stonacc h EEae ame he Hane Bene senses sade Sano S en AEeERe 1 
Hossilsro fat hel atnb rl mame ce. eae eres Ae eee a 22). os Nc SUNY CLL eee 11 
OhseryationsronOlenel usr owellessiae = We eee oars fi ota cake cain cee coe ne ate esos ReeR oe 32 
HORSUS Obie LOWED SILURIAN: srs eee ns eereaate ee ok ahem noite ccm cceekieea ames toc cee 65 
HBRBE STOP RU ONDE VODA socom ro sak ce eee eee © ape eas claire Sinisa wares Hacclee cate a teaals tea oe ee 99 
Fossils of the Carboniferous .....-.....-.-...------ aC eee MEE A to ee ns Coen, oP 212 
PN SLOILM ICH IS (OSS PECIOS 6.0.0 ofertas iain eee sen eT ear tte en 268 
Paleozorcwsectionvin Central: Nevada... = sis ss see see eee oe ones eee soe eet e nee cece 283 
JING BSS boos agiasoa pee SOMCH SOs Be A eR EEO ACH sce ithe Shs Soccer Se SCC ener ear ae mee 286 
