TABLE OF CONTENTS— Continued. page. 



M'rypttrus mansflelcU. ( WitJi draicing.) 351 



Model of Blair county, by E. B. Harden 352 



Egyptian alphabet, by Com. E. Y. McCauley, U. S. N 352 



Stated Sleeting, April 15 353 



Election of 7 neAv members 354 



Photodynamic Notes, No. 11. By P. E. Cliase : — 16. Weighing the 

 Sun by a soap-bubble. 17. Centres of density and nucleation. 18. 

 Nucleal and rupturing centres of condensation. 21. Nodal coor- 

 dination. 22. BoujMaries of the dense belts. 23. Fourier's tlieo- 

 rem. 24. Satellite^Klocity at the centre of density. 25. In the 

 dense belt. 27. J^Smonic relations of the Moon. 28. Mars' 

 moons. 29. JupitePs. 30. Saturn's. 31. Uranus'. 32. Nep- 

 tune's. 33. Infra-Mercurial photodynamic notes. 34. Photody- 

 namic projection of hydrogen. 35. Ethereal, gaseous and planet- 

 ary densities. 36. The experimentum crucis.^ 87. Supratelluric 

 nodes. 38. Notes in the dense belt. 39. Basic lines. 40. Chemi- 

 cal spectra. 41. The corona line. 42. Hydrogen lines. 43. Three 



orders of spectra. 44. iEther, corona, hydrogen 354 



Systematic arrangement of the Order Perissodactyla. By E. D. Cope. 377 

 On the structure of the posterior foot of Toxodon. Bj^ E. D. Cope. 402 



Stated Meeting, May 6 403 



Exhibition of coins and granite, &c., from the Obelisk. By Persifor 



Frazer and Lieut. - Com. Qorringe, JJ. 8. N. 404 



An analysis of the fire-damp explosions in the Anthracite coal mines, 



from 1870 to 1880. By H. M. Chance, M.D 405 



Stated Meeting, May 20 408 



Presentation of a diploma of 1786 408 



The Lord's Prayer in Egj^ptian 409 



Notes on an Egj'ptian element in the names of the Hebrew Kings 

 and its bearing on the storj' of the Exodus. By ./ P. Lesley. ( Con- 

 tinued in No. 109) 409 



Note. -Six plates of the figs, desca-ibed on page 58 (received too late to 

 be bound with No. 107) are bound with this No. 108. 



ERRATA. 



Page 3D1, 1. 27, read, continued in this channel, &c. 

 Page 301, 1[ 5, 5, read 1" 5a, 5b. 

 Page 310, 1. 10, read Brant for Bi-ent. 



Page 311, footnote, read soutJiern and south-westevn for northern and 

 north-western. 

 Page 318, 1. 31, read connection with Lake Huron. 

 Page 319, 1. 5 from bottom, read Juice been excavated. 

 Page 323, 1. 33, read lake at no very great distance. 

 Page 328, 1. 34, read valley from Lake Erie. 

 Page 332, 1. i., read westward, it has about. 

 Page 333, 1. 16, read, refer to some buried, &c. 

 Page 352, J. F. Mansfield should read L F. Mansfield. 



