221 



Vegetable tallow from Bassia parkii, 

 169.— Wax of the Palm leaf, 185.— 

 Uranium in beryls of Ackworth, 191. 



Thracia truncata/48. 



Tribalus amerieanus, 186. 



Trochus occidentals, 49. 



Tuckerman, Edward. Notices of N. 

 England Lichenes, 13, 205. — Ice on 

 Mount Washington, 207. 



Turritella reticulata, 50. 



costulata, 50. 



Uranidea quiescens, 205. 

 Uranium, phosphate of, 15» 



in beryls, 191. 



Unio crispata, 141. 



— — exolescens, 141. 



Unio foliacea, 141. 

 tavoyensis, 141. 



Vitrina prcestans, 140. 



Wyman, Jeffries. On Cranium of a 

 Seal, 2.— Echinoryncus nodosus, 95. — 

 Rotifer and tardigrade animalcules, 99. 

 Linguatula from a Boa, 103. — Ascari- 

 desfromCyclopterus, 103. — Anal pouch 

 of Mephitis, 110. — Analogies of the 

 teeth of Lepidostei and Labyrintho- 

 donts, 131. — Spongia fluviatilis, 196. — 

 Anatomy of Tebenophorus caroliniensis 

 and Glandina glans, 154. — Annual ad- 

 dress, 116. 



Yttrocerite, 162, 165, 171. 



