. Memoirs of the Museum of Comparative Zoölogy, at Harvard College, Cambridge, Mass . e Tennes-see river system in southwestern Virginia and the neighborhood of Chat-tanooga, over an east and west Avidth of abt)ut sixty miles, there are somethousands of these caverns; so that the ex])lorer will have an abundant AGE OF THE ELY CAVE. 13 chance to so select his places of exploration as to secure caverns of recent or very ancient date, according to the end he has in view. I know no other part of the United States that is so favorably placed for this class of inquiries. N. S. SHALER. EXPLANATION OF


. Memoirs of the Museum of Comparative Zoölogy, at Harvard College, Cambridge, Mass . e Tennes-see river system in southwestern Virginia and the neighborhood of Chat-tanooga, over an east and west Avidth of abt)ut sixty miles, there are somethousands of these caverns; so that the ex])lorer will have an abundant AGE OF THE ELY CAVE. 13 chance to so select his places of exploration as to secure caverns of recent or very ancient date, according to the end he has in view. I know no other part of the United States that is so favorably placed for this class of inquiries. N. S. SHALER. EXPLANATION OF TLATE I. Pachycyon robustus. (All the figures are of natural size.) Fig. 1. Right scapula, external sui-face. Fig. 2. The same, internal surface. Fig. 3. The same, anterior view. Fig. 4. The same, posterior view. Fig. 5. Right femur, posterior view. Fig. 6. The same, anterior view. Fig. 7. The same, internal surface. Fig. 8. The same, external surface. Fig. 9. The same, proximal end, seen from above. Fig. 10. Tlie same, distal end. seen from below. iJ?memoirsofmuseumo1002harv. 20


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Keywords: ., bookcentury1800, bookdecade1880, booksubjectzoology, bookyear1885