CONTEXTS OF VOLUME XX. 



Page 



Title-page i 



Officers ii 



Contents .' iii 



Dates of Pnblii-atiniis nr.d Au!li;irs" St^it.-i rates iii 



List of Illustrations iv 



(Part I) Art. 1. Tlie I'liylogeny of I'ertain ("eritliiiila-. LJy Elvira 



Wood. ( I'hites l-IX ) 1 



(Part II) Art. '2. Tlie Watclmng Basalt and the I'aragenesis of its Zeo- 

 lites and other Secondary Minerals. By Clarence 



N. Fex.xer. (Plates X-XIII) '.Y.X 



Art. '■!. New Genera and Species of Carboniferous Fossils from 

 the Fayetteville Shale of Arkansas. By George H. 



GiRTY ISO 



Art. 4. New Species of Fossils from the Thaynes Limestone of 



Utah. By George H. Girty 2oD 



Art. .j. The Coal Basin of Decazeville. Frant e. r>y .Tohx .7. 



Stevenson. (Plates XIY-XV) 243 



Art. n. The North American Ants of the Genus Vduiponotits 



IMayr. By William 3Iortox Wheeler 295 



Art. 7. Measurements of Dakota Indian Children. By Clark 



WissLER 355 



(Part III) Art. 8. Geology and Economics. By .James F. Kemp '. . . 365 



Art. 0. Biographical Memoir of Robert Parr Whitfield. By 



L. P. Gratacap. (Plate XVI i 385 



.\kt. 10. Records of Meetings, 1010. By Enjiixu Otls IIovey.. 300 



The Organization of the Academy 443 



The Original Charter 443 



Order of Court 445 



The Amended Charter 440 



Constitution .' 440 



By-laws 450 



^Membership Lists. 31 December. ]'.n<i 457 



Index 471 



DATES OF PUBLICATIONS OF AUTIIOKS" SEPARATES. 



Edition. 



(Part I I Art. 1. pp. 1-02. 14 May. lOpi. 275 copies. 



(I'art II) Art. 2. pp. 0-3-187. 4 August. 1010. 275 copies. 



Art. 3. pp. 180-238. 2(> October. 1010. 175 copies. 



Art. 4. pp. 230-242. 20 October, 1010. 175 copies. 



Art. 5. pp. 24.3-204. 20 December. lOK). 375 copies. 



Art. 0. pp. 205-3.j4, 30 December, litio. 325 copies. 



Art. 7. PI). 3.J.J-.3G4, 7 Fel)ruary. 1011. 125 copies. 



(Part 111) Xrt. 8. pp. 3G5-384. 23 February. 1011. 225 copies. 



Art. '.t.]tp. 385-308. 31 .March. 1011. 125 copies. 



.\RT. 10. pp. 443-401 ►. 5 .Inly. 1011. 75 copies. 



iii 



