XXVIII, 



XXIX. 



XXX. 



XXXI. 

 XXXII. 



XXXIII. 



XXXIV. 



XXXV. 

 XXXVI. 



XXXVII. 



XXXVIII. 

 XXXIX. 



XL. 



XLI. 



XLII. 

 XLIII. 



XLIV. 



ILLUSTRATIONS IX 



Incomplete skeleton of plesiosaur in the U. S. 

 National Museum. Type of Brachanchciii'iis 

 lucasi WiLLiSTON 95 



Shell gorget with engraved figure of a discus 

 thrower, from an ancient grave near Eddyville, 

 Kentucky 97 



Shell gorget from Mexico with engraved human 

 figure 99 



The glacial pothole in the National Museum 100 



( I ) Nesting site of Colony I of the Black-crowned 

 Night Heron. (2) Adult flying (same col- 

 ony) 104 



(i) Nest and eggs of Black-crowned Night 

 Heron in situ. (2) Detailed view of same. 

 (3) Young and eggs of same, just hatched 

 and hatching. (4) The young three days 

 after hatching 104 



( I ) Young Black-crowned Night Herons seven 

 days old. (2) Same, ten days eld. (3) Same, 

 three weeks old. (4) A favorite position in the 

 tree-top after leaving the nest 106 



(i) Young Black-crowned Night Heron in full 

 juvenile dress. (2) An adult 106 



(i) Two young Green Herons 24 hours old and 

 two addled eggs. (2) Twelve days old — on 

 the defense 108 



(i and 3) The white phase of the Little Blue 

 Heron. (2) Great Blue Heron in a tree. (4) 

 Little Blue Herons feeding on Anacostia river. 

 (5) Roosting place of American Egret and 

 Little Blue Heron. (6) American Egret on 

 the marsh 108 



Snowy heron iii 



Celts with stone handles from Santo Domingo. . . 114 



Stone implements from Santo Domingo and Porto 

 Rico 116 



Stone objects from Porto Rico and Santo Do- 

 mingo 119 



Ornamental stone pestles from Santo Domingo. . 120 



Idols with conical projections from Santo Do- 

 mingo and Porto Rico 123 



Stone idols from Santo Domingo and Porto Rico. 125 



