APPENDIX C. 269 



f 



1842. 91. Monographies d'Echinodermes, vivans et fossiles. 

 ^iemc Hvraison, ' L 'anatomic du genre echinus," par G. Valentin ; 

 avec une ''Preface par Agassiz." 4to. Neuchatel, 1842. 



The " preface " of ten pages by Agassiz is important because in it 

 he says that Valentin delivered his manuscript-'lnto his hands as far 

 back as 1840, and the "Preface" is dated December, 1841. The 

 exact date of the issue of the fourth part or " Hvraison " is marked 

 on the cover, 1842. It is the last part of those monographs of the 

 Echinodermata. 



The third monograph, " Des Galerites," and the fourth mono- 

 graph, "Des Dysaster," forming together the third part, or "3ieme 

 livraison," are by E. Desor ; and the part was issued in 1842. Like 

 the other parts, it was published " aux frais de L. Agassiz." 



1842. 92. No title. The paper has been quoted under the 

 following designations : ist, " Lettre sur la structure lamellaire des 

 glaciers que s'attribue Mr. James D. Forbes." 2cl, '' A reply to 

 Mr. James D. Forbes on the laminated structure of glaciers." 

 3d, " Agassiz 1 s controversy with James D. Forbes, of Edinburgh." 

 Neuchatel, i o pages. 4to. 1 1 avril, 1842. Expedie de Neuchatel, 

 le 21 avril, 1842. In it is reprinted a letter of Professor James D. 

 Forbes to M. Desor, which was largely distributed among savants 

 by Professor Forbes. 



1842. 93. Extrait d'une lettre a M. Alcide d'Orbigny sur la 

 repartition des fossiles dans les divers terrains. Bull. Soc. Geol. 

 France, Vol. XIII., pp. 355-356. Paris, mai, 1842. 



1842. 94. New Views regarding the distribution of fossils in 

 formations. Edinb. New Phil. Journ., Vol. XXXII., pp. 97-98. 

 Edinburgh, January, 1842. 



1842. 95. Materiaux pour une bibliotheque zoologique et pale- 

 ontologique. 562 pages, folio. Neuchatel, 1842. 



1842. 96. Reiseproject nach dem Aargletscher, Hiigi iiber 

 Gletscher; Myaceen. Leonhardund Bronn, Neues Jahrb., pp. 313- 

 317. 1842. 



1842. 97. Vortrag iiber seine Gletscheruntersuchungen auf 



