XYZ] 



463 



[YAR 



X-Y-Z. Riflessioni intorno alia memoria de' 

 Signori Professor! Zantedeschi e Mayer ris- 

 guardante la scossa della raua. Poligrafo, XIV., 

 1833, pp. 61-64. 



Xantus, John. Catalogue of Birds collected in 

 the vicinity of Fort Tejon, California, with a 

 description of a new species of Syrnium. Philad. 

 Acad. Nat. Sci. Proc. 1859, pp. 189-193. 



2. Descriptions of supposed new species of 



Birds from Cape St. Lucas, Lower California. 

 Philad. Acad. Nat. Sci. Proc. 1859, pp. 297- 

 299. 



3. Descriptions of three new species of 



Keise durch die Californische 

 Petermann, Mittheil. 1861, 



Starfishes from Cape St. Lucas. Philad. Acad. 

 Nat. Sci. Proc. 1860, p. 568. 



Xantus, John. 4. 



Halbinsel, 1858. 



pp. 133-143. 

 Ximenes, Leonardo. Memoria intorno alia 



niaggior perfezione dell' argano. Verona, Mem. 



Soc. Ital. L, 1782, pp. 613-647. 

 •- — 2. Delle osservazioni solstiziali, fatte alio 



gnomone della cattedrale Fiorentina nell' anno 



1782, e de' loro risultati paragonandole coUe 



simili osservazioni del 1756, 1764, e 1775. 



Verona. Mem. Soc. Ital. IL, 1784, pp. 256- 



312. 

 3. Memoria sulla vera densita de' pianetti, 



sulla riduzione de' loro semidiametri, e sull' 



ipotesi de' loro nuclei. Verona, Mem. Soc. 



Ital. III., 1786, pp. 278-296. 



Y. 



T. Eelazione dell' influenza, che esercita il con- 

 tatto dei metalli eterogenei nelle loro proprieta 

 chimiche. Poligrafo, X., 1832, pp. 333-339. 



2. On the imaginaiy expressions for Sin x 



and Cos x. Mathematician, I., 1845, pp. 232- 

 235. 



T, A. On the cause of deglutition. Charleston, 

 South. Journ. Med. I., 1846, pp. 290-293. 



T, J. Observations on one of the means by 

 which the eye has been supposed to accommo- 

 date itself to the different distances of objects. 

 London, Med. Phys. Joui-n. IL, 1799, pp. 331- 

 334. 



Yandell, L. P. On the distribution of the Cri- 

 noidea in the Western States. Amer. Assoc. 

 Proc. 1851, pp. 229-235. 



'■^ 2. Description of a new genus of Cri- 



noidea. Silliman, Journ. XX., 1 855, pp. 1 35-1 37. 



3. Notice of a new fossil genus (Eleuthero- 



crinus) of the family Blastoidea from the Devo- 

 nian strata, near Louisville, Ky. Philad. Acad. 

 Nat. Sci. Proc. VIII., 1856, pp. 73-75. 



Tamall, M. Mean places for 1860.0 of Com- 

 parison-Stars, used in observations of Egei-ia, 

 Phocea, and Ariadne. Gould, Astron. Journ. 

 v., 1858, p. 94. 



YarreU, William. Notice of the occurrence of 

 some rare British birds. Zool. Journ. IL, 1826, 

 pp. 24-27 ; IIL, 1828, pp. 85-88. 



2. On the small horny appendage to the 



upper mandible in veiy young chickens. Zool. 

 Journ. IL, 1826, pp. 433-437 ; Froriep, No- 

 tizen, XY., 1826, col. 33-36. 



3. Notice of the occurrence of a species of 



Yarrell, William. 4. Observations on the ti-a- 

 chese of birds ; with descriptions and represen- 

 tations of several not hitherto figured. Linn. 

 Soc. Trans. XV,, 1827, pp. 378-391. 



5. On the change in the plumage of some 



hen-pheasants. Phil, Trans. 1827, pp. 268- 

 275 ; Ann. Sci. Nat. XIII., 1828, pp. 71-73. 

 6. Some observations on the anatomy of 



Duck new to the British Fauna (Fuligula rufina. 

 Pall.). Zool. Journ. IL, 1826, pp. 492-493. 



the British birds of prey. Zool. Journ. III., 

 1828, pp. 181-189. 



7. Observations on the osteology of the 



Fennec. Zool. Journ. IIL, 1828, pp. 401- 

 403. 



8. On the osteology of the Chlamyphorus 



truncatus, Harlan. Zool. Journ, IIL, 1828, pp. 

 545-554 ; Froriep, Notizen, XXV., 1829, col. 

 145-149; Heusinger, Zeitschrift, IIL, 1833, pp. 

 124-130 ; Oken, Isis, XXIIL. 1830, coh 926- 

 928. 



— 9. On the supposed identity of Whitebait 

 and Shad. Zool. Journ. IV., 1829, pp. 137- 

 144; Phil. Mag. VL, 1829, pp. 253-261. 



— 10. Observations on the Tapir of America. 

 Zool. Journ. IV., 1829, pp. 210-213. 



— 11. On the use of the xiphoid bone and 

 its muscles in the Cormorant (Pelecanus carbo, 

 Linn.). Zool. Journ. IV., 1829, pp. 234-237. 



— 12. Notes on the internal appearance of 

 several animals examined after death, in the 

 collection of the Zoological Society. Zool. Journ. 

 IV„ 1829, pp. 314-322. 



13. On the structure of the beak and its 



muscles in the Crossbill (Loxia curvirostra). 

 Zool. Journ. IV., 1829, pp. 459-465. 



