CONTENTS OF VOLUME XLVI 



NUMBER I. 



Page. 



Art. I. On the Action of Yellow Light in producing the Green 

 Color, and Indigo Light the Movements of Plants ; by 



D. P. Gardner, M. D. 1 



II. Remarks on Zoological Nomenclature ; by Prof. S. S. 



Haldeman, 18 



III. Mineralogy of New York — comprising detailed descrip- 



tions of the Minerals hitherto found in the State of New 

 York, and notices of their uses in the Arts and Agricul- 

 ture ; by Prof. Lewis C. Beck, M. D., - - -25 



IV. A Catalogue of the Reptiles of Connecticut, arranged 



according to their natural families ; by Rev. James H. 



Linsley, A. M., 37 



V. Remarks on the Theory of Compound Salt Radicals ; by 



WOLCOTT GlBBS, -...-.-52 



VI. An Abstract (from Kane's Elements) of the Arguments 

 in favor of the Existence of Compound Radicals in Am- 

 phide Salts, -...-..-57 

 VII. On the Volume of the Niagara River, as deduced from 

 measurements made in 1841 by Mr. E. R. Blackwell, 

 and calculated by Z. Allen, ..... 67 

 VIII. On the Fossil Footmarks of Turner's Falls, Massachu- 

 setts ; by James Deane, M. D. — (with two plates,) - 73 



IX. A New Process for preparing Gallic Acid ; by Edward 



N. Kent, ......... 78 



X. Solution to a Case in Sailing ; by W. Chattvenet, A. M., 79 



XI. A Monography of the North American species of the ge- 

 nus Equisetum, by Prof. Alexander Braun ; translated 

 from the author's manuscript, and with some additions, 

 by George Engelmann, M. D., - - - - 81 



XII. A brief Notice of the Charae of North America ; by Prof. 



Alexander Braun, 92 



XIII. Catalogue of a collection of Plants made in Illinois and 

 Missouri, by Charles A. Geyer ; with critical remarks, 

 &c. by George Engelmann, M. D., - • - 94 , h j / A+r 



