ACCESSIONS TO THE LIBRARY. 303: 
pp. 76-88. Volcanic rocks of mesozoic age in Pennsylvania, by E. Goldsmith, pp. 90 97, 4 
pll. Contributions to the herpetology of Sao Paulo, Brazil, I, by Dr. H. von Ihering, pp, 
101-109. Observations on errant frustules of Lunotia major, by T. Chalkley Palmer, pp. 
110-119. Notes on Alaskan water birds, by Alvin Seale, pp, 126-140. Odonata (dragon flies) 
from the Indian ocean and from Kashmir, collected by Dr. W. L. Abbott, by Philip P. Cal- 
vert, pp. 141-154. Diptera collected by Dr. A. Donaldson Smith in Somaliland, eastern 
Africa, by Chas. W. Johnson, pp. 157-164. The Muscide collected by Dr. A. Donaldson 
Smith in Somaliland, Garry De N. Hough, pp. 165-187. Notes on the fossil walrus of east- 
ern North America, by Samuel N. Rhoads, pp. 196-201. Birds observed in central Cali- 
fornia in the summer of 1893, by John Vandenburgh, pp. 206-218. Revision of the North 
American slugs: Binneya, Hemphillia, Hesperarion, Prophysaon, and Anadenulus, by 
Henry A. Pilsbry and E. G. Vanatta, pp. 219-261; 8 pll. Materials toward a natural classi- 
fication of the eylindrelloid snails, by Henry A. Pilsbry and’E. G. Vanatta, pp. 264-286; 2 
pll. List of bats collected by Dr. W. L. Abbott in Siam, by Gerrit S. Miller, jr., pp. 316-325. 
Descriptions of five new phyllostome bats, by Gerrit S. Miller, jr., pp. 326-337. Notes on 
arctic red-backed mice, by Gerrit S. Miller, jr., pp. 358-367. Botanical observations on the 
Mexican flora, especially on the flora of the valley of Mexico, by John W. Harshberger, pp. 
372-413. Fossil mollusks and diatoms from the Dismal Swamp, Virginia and North Caro- 
lina; indication of the geological age of the deposit, by Lewis Woolman, with notes on 
the diatoms, by Charles S. Boyer, pp. 414-428. 
American Philosophical Society: 
Proceedings, vol. XXXVI, 1897, 499 pp.; 13 pll. No. 154. The species of the genus Wel- 
anoplus, by Samuel H. Scudder, pp. 5-35. The finding of the remains of the fossil sloth at 
Big Bone cave, Tennessee, in 1896, by Henry C. Mercer, pp. 36-70; 26 figs. A new paleozoic 
vertebrata from Illinois, Ohio, and Pennsylvania, by E. D. Cope, pp. 71-90; 3 pll. The 
genesis and chemical relations of petroleum and natural gas, by Samuel P. Sadtler, pp. 
93-102. On the nature and origin of petroleum, by S. F. Peckham, pp. 103-112, A sugges- 
tion as to the origin of Pennsylvania petroleum, by David T. Day, pp. 112-115. On the 
genesis of natural gas and petroleum, by Francis C. Phillips, pp. 116-121. On the occur- 
rence of petroleum in the cavities of fossils, by Francis C. Phillips, pp. 121-126. On the 
composition of American petroleum, by Charles F. Mabery, pp. 126-140. 
No. 155. The insulating medium surrounding a conductor, by Edwin J. Houston and 
A. E. Kennelly, pp. 144-175. Relation of the pentagonal dodecahedron found near Mari- 
etta, Ohio, to Shamanism, by J. Cheston Morris, pp. 179-183. Australian rock carving, by 
R. H. Mathews, pp. 195-208; 1 pl. The transitive substitution groups that are simply iso- 
morphic to the symmetric or the alternating group of degree six, by G. A. Miller, pp. 208- 
215. Geology of the paleozoic area of Arkansas south of the novaculite region, by George 
H. Ashley, pp. 217-318; 4 pl. 
No, 156. A geological reconnaissance of the coal-fields of the Indian Territory, by Noah 
Fields Drake, pp. 326-419. The span of life, by Robert P. Field, pp. 420-424. The survival 
of the medieval art of illuminative writing among Pennsylvania Germans, by Henry C. 
Mercer, pp. 424-433; 5 pll. The variation of terrestrial latitude, by C. L. Doolittle, pp. 434- 
438. The measurement of thought as function, by Daniel G. Brinton, pp. 438-440. Some 
results of the Norwegian polar expedition, 1893-96, by Dr. Fridtjof Nansen, pp. 442-454. 
Remarks on polar expedition, by Com. George W. Melville and Prof. Angelo Heilprin, pp. 
454-464. Rock carvings and paintings of the Australian aborigines, by R. H. Mathews, pp. 
466-478; 1 pl. The Passamaquoddy wampum records, by J. Dyneley Prince, pp. 479-495. 
The ethnic affinities of the Guertares of Costa Rica, by Daniel G. Brinton, pp. 496-499. 
Vol. XXXVII, No. 157,107 pp. The altitude of the aurora above the earth’s surface, by 
Cleveland Abbe, pp.1-7. Description of four new species of Rocinela, by Harriet Richard- 
son, pp. 8-17. Specializations of the lepidopterous wing, by A. Radcliffe Grote, pp. 17-43; 3 
pll. An old broadside, with reference to the throne of congress, by J. F. Sachse, pp. 45-51; 
2pll. Initiation ceremonies of Australian tribes, by R. H. Mathews, pp. 54-73; 1 pl. Pre- 
liminary note on the selenodont artiodactyls of the Uinta formation, by W. B. Scott, pp. 
73-81. Notes on Kansan drift in Pennsylvania, by Prof. Edward H. Williams, jr., pp. 
84-77. The genesis of bitumens, by S. F. Peckham, pp. 108-113. Draft of the declara- 
tion of independence, by I. Minis Hays, pp. 88-107; 3 pll. 
Transactions, vol. XIX, new series, 1898, part II, pp. 199-272; 13 pll. Some experi- 
ments with the saliva of the Gila monster (Hleloderma suspectum), by John Van Den- 
burgh, pp. i99-220. Results of recent researches on the evolution of the stellar systems,. 
by T. J. J. See, pp. 221-235; 2 pll. On the Glossophagine, by Harrison Allen, pp. 237-266;, 
10 pll. The skull and teeth of Eclophylia alba, by Harrison Allen, pp. 267-272; 1 pl. 
