Vlll 



XXXV. 



XXXVI. 



XXXVII. 



XXXVIII. 



XXXIX. 



XL. 



XLI. 



XLII. 



XLIII. 



XLIV. 



XLV. 



XLVI. 



XLVII. 



XLVIII. 



XLIX. 



L. 



LI. 

 LII. 



LIII. 



LIV. 



LV. 



LVI. 



LVII. 



LVIII. 



LIX. 



LX-LXII. 



LXIILLXIV. 



LXV. 



LXVI. 



SMITHSONIAN MISCKLLAXEOUS COLLECTIONS VOL. 52 



Page 



Great sun-spot of October, 1903. Fig. i and Fig. 2 354 



Hydrogen flocculi 356 



Some new South American land shells 364. 



Cliff dwellings near Roosevelt Dam, Salt River 406 



Pictographs from Gila-Salt Valley 414 



Ruin at El Rancho del Tucson 416 



Pictographs on cliff near Tucson 418 



Ruin opposite old Fort Grant 428 



I. Type skull of Proinia patagonica, new species. 2. Man- 

 dible of Prosqualodon australis Lydekker 456 



Teeth of Prosqualodon australis Lydekker 456 



. Vertebrae of Prosqualodon australis Lydekker 456 



I. j\Iiami river between Miami and the edge of the Ever- 

 glades. 2. Young mangroves along north bank of Miami 



river 464 



I. Mangroves along south bank of Miami river. 2. Adult 



mangroves along north bank of Miami river 464. 



I. Mangroves at new cut, eastern side of Biscayne bay. 2. 



Mangrove roots, same locality 464 



I. Mangrove roots at Pigeon Ke3^ 2. Mangroves along 



the south shore of the Marquesas 464 



I. Young mangrove on southwest side of Bear Cut. 2. 

 Young mangrove on shoal two miles northeast of Pigeon 

 Key. 3. Two young mangroves from shoal about two 



miles north of Pigeon Key 464 



I. Young mangroves on shoal, upper end of Long Island. 



2. Young mangroves, near view, same locality 464 



I. Elevated coral reef rock and vegetation at southern end 

 of old Rhodes Key. 2. Mangrove Key, between Largo 



and old Rhodes Keys 464 



Joplin calcite 468 



Calcite twin, Guanajuato, Mexico 468 



Georychus kapiti, new species 469 



Thamnomys loringi Heller and Mus peromyscus Heller... 471 



The Thomson, Georgia, meteorite. Natural size 473 



The Thomson, Georgia, meteorite. Showing microstruc- 



ture 475 



Cube face of pyrite 484 



Otocyon virgatus. type 488 



Woodimrdia and Dennstcedtia 496 



Perspective elevation of shelter on Mount Whitney 502- 



J^heltcr for observers on Mount Whitney 504. 



