CONTENTS. 



Section III. Spinal Cord ...... 



Section IV. Peripheral portion of the Nervous System 



Section V. Philosophical Anatomy of the Cranial Nerves and Skull 



Section VI. Spinal Nerves ...... 



Section VII. Sympathetic Nerve . . . . . 



Explanation of the Plates ...... 



18 

 23 

 37 

 42 

 46 

 49 



ARTICLE V. Nereis Boreali-Americana, or Contributions to a History of the Marine 

 Alg.i: of North America. By William Henry Harvey, M. D., 



M. R. I. A. — Part II. Rhodospermcas. Pp. 262, and twenty 

 Introduction .... 

 Synopsis of the Orders of Rhodospermeas 



Order I. Rhodomeleaceje 



Order II. Laurenceacese 



Order III. Corallinaceas . 



Order IV. Sphcerococcoideae 



Order V. Gelidiacete 



Order VI. SpongiocarpeEe 



Order VII. Squamariese . 



Order VIII. Helminthocladiese 



Order IX. Wrangeliaceaj 



Order X. Rhodymeniaces 



Order XI. Cryptonemiaceae 



Order XII. Spyridiaceas . 



Order XIII. Ceramiaeese . 

 Alphabetic Index 

 References to the Plates 



four plates. 



9 



67 



80 



88 



112 



126 



128 



131 



141 



144 



156 



203 



207 



249 



257 



ARTICLE VI. Plants Wrightian^ Texano-Neo-Mexican.*;. Part II. An account of a Col- 

 lection of Plants made by Charles Wright, A. M., in Western Texas, New 

 Mexico, and Sonora, in the years 1851 and 1852. By Asa Gray, M. D. 

 Pp. 120, and four plates. 

 Index ......... 109 



Explanation of Plates . . . . . . .118 



