X 



970 MONOGRAPHS OP NORTH AMERICAN RODENTIA. 



1847. — Pouchet, P. A. Thdorie positive de I'ovnlatiou spontaude et de la fdcondation des Diammifferes 

 et de I'espfece humaine, basde sur I'observatioD de tonte la sdrie auimale. Ouvrage qui a ob- 

 tenu le prix de physiologie exp(?iimentale ^ I'Acad^mie royale des sciences. Accompagnd d'un 

 atlas iu-4° de 20 plauches gravdes et colories. 8°. (4J sheets.) Paris, J.-B. Baillifere et fils, 1847. 



Scliinz, H. R. Ueber die geographische Verbreitung der SUugethicre. < Schweizer. Gesell. 

 Verhandl. 1847, pp. 132-159. 



1848. — Agassiz, L. Nomenclatoris zoologici index universalis, contiuens noraina systematica classi- 

 um, ordinuui, faojiliaruiu et geuerum auimalium omnium, tam viventium qiiam fossilium, 

 secundum ordiueni alpbabeticum unicum disposita, adjectis bomunymiis plantarum. 16°. xi, 

 1136 pp. Soluduri, sumptibus et typis Jeut et Gassmaun, 1848. 



Agassiz, Ii. [Prediction tbat among the higher mammalia the foot of the embryo would be 

 found to be webbed.] <^Proc. Boston Soc. Nat. Hist, iii, 1848, p. 42. 



Comstock, J. L. Natural history of quadrupeds; with engravings, on a new plan, exhibiting 

 their comparative size; adapted to the capacities of youth ; with authentic anecdotes, illustrat- 

 ing the habits and characters of the animals, together with reflections, moral and religious; 

 designed ibr sabbath-school libraries, families, and common schools. 4°. 73 pp., with 23 figs., 

 frontispiece, 1 folded pi. New York, published by Pratt, Woodford Si, Co., 1848. 



D' Alton, E. Beobachtuugen Uber die verscbiedenen Typen in den Hand- und Fussknochen der 

 Saugetbiere. < Zeitung f. Zool. Bd. 1, 1848, pp. 25-29, 33-36. 



Milne-£idV7ards, H. On certain principles bearing upon the natural classification of animals, 

 and more particularly on the methodical distribution of the mauimifera. <^Am. Journ. Sci. 

 and Arts (2), v, 1848, pp. 428-431 [from Ann. Sci. Nat. 3e s6r. i, 1844]. 



Nilsson, S. Uuderstigelse over Pattedyreues Udbredelse. 'C Oversigt K. Dausk. Selsk. For- 



haudl. 1848, pp. 2-5. 

 1848-49. — Fraser, L. Zoologia typica; or, figures of new and rare mammals and birds, described in 



the proceedings, or exhibited in the collections of the Zoological Society of London. 20 parts, 



with 100 pi. Folio. London, Fraser, 1848-49. 

 1849. — Agassiz, L. [On the egg, in vertebrata, as a means of classification.] <^ Proc. Am. Acad. 



Arts aud Sci. ii, 1849, pp. 183-184. 

 Deen, J. van. Beitrag zur Entwickelungsgeschichto des Menschen und der Siiugethiere, mit 



besouderer Beriicksichtigung des Uterus masculinus. (Mit 2 Taf.) <^Zeitschr. f. wiss. Zool. 



Bd. 1, 1849, pp. 295-346. 

 Waterhouse, G. R. The physical atlas of natural phenomena. By A. Keith Johnston. Ta- 

 bles of the orders Eodeutia and Ruminantia. No. 5. By G. E. Waterhouse. Fol. 1849. 

 1849-50. — Kilian, F. M. Die Structur des Uterus bei Tbieren. <[ Henle u. Pfeufer, Zeitschr. f. ration. 



Med. viii, 1849, pp. 53-90, 1 pi. ; 2. Artikel, ibid, ix, 1850, pp. 1-51. 

 1850. — Agassiz, L. The zoological character of young mammalia. <] Proc. Am. Assoc. Adv. Sci. ii, 



1850, pp. 85-89. 

 Betz, F. Ueber den Uterus masculinus. Ein Beitrag zur Eutwickelungsgeschichte der Ge- 



schlecbtsorgane. Mit 1 Taf. < MUller's Arch. f. Auat. 1850, pp. 65-70. 

 Browne, P. A. A microscopic examination and description of some of the piles of the head of 



albiL>OH. <^Proc Am. Assoc. Adv. Sci. iii, 1850, pp. 108-114. 

 Burnett, W. J. Kesearches on the origin, development, and nature of the spermatic particles 



throughout the vertebrata. < Proc. Am. Assoc. Adv. Sci. iv, 1850, pp. 22-25. 

 Geoffrey St.-Hilaire, I. Cours de zoologie (mammiferes et oiseaux) fait an Mutdum d'Histoire 



Naturelle en 1850. < Rev. et Mag. Zool. ii, 1850, pp. 12-20; Bibl. Univ. Archives, xviii, 1851, 



pp. 23-32. 

 Marcusen, J. Ueber die Entwickelung der Zahne der Siiugethiere. < Bull. Phys. Math. 



Acad. St. Pdtersbg. viii, 1850, pp. 305-320, 1 pi. ; Mdlaug. Biolog. i, pt. ii, 1851, pp. 109-130. 

 Regley, — . Histuire naturelle des mammileres. Avec uue gravure. 12°. 21() pp. Limoges, 



Barbou, (1847) 1.-50. 

 Ruschenberger, W. F. S. Mammalogy. 12°. Philadelphia, Grigg, Elliot & Co., 1850. 

 ■White, A. A popular history of mammalia; comprising a familiar account of their classifica- 

 tion aud habits. Sq. 16°. viii, 346, 14 pp., 16 pll. Loudon, Reeve, Benham & Reeve, 1850. 



