LIST OF CONTRIBUTORS. 161 



Rogers, Robert E. Continued. 



On the decomposing power of carbonic acid. P '60, 515 



On Way's electric light. P '60, 515 



On the effects of thawing snow with salt. P '62, 2 



Rogers, Wm. B. On albertite. P '60, 98 



On binocular vision. P '60, 98 



Rogers, W. Frederick. Synopsis of species of Chrysoniela and 

 allied genera inhabiting the United States. P '56, 29 



Rominger, Carl. Observations on Chaetetes and some related 

 genera, in regard to their systematic position, with an appended 

 description of some new species. P '66, 113 



On the minute structure of Stroinatopora and its allies. P 



'86, 39 



Description of a new form of Bryozoa. P '87, 11 



Description of primordial fossils from Mount Stephens, N. W. 



Territory of Canada. P '87, 12 

 Rommel, John. Jr. On adipocire. P '51, 324 

 Rothrock, J. T. Poisonous properties of the LeguminosaB. P 



77, 274 



Relation of medullary rays to the strength of timber. P '84, 14 



The internal cambium ring in Gelsemium sempervirens. P 



'85, 22 



Mimicry among plants. P '88, 12 



The sand-dunes of Lewes, Del. P '89, 134 



Remarks on death of Prof. Asa Gray. P '88, 62 



Ruschenberger, W. S. W. Seventeen-year locust. P '43, 278 



On binocular vision. P '60, 99 



On fossil fish scales from Mississippi. P '66, 107 



Notice of the late Dr. Chas. Pickering. P '78, 166 



Biographical notice of Wm. S. Vaux. P '82, 111 



Biographical notice of Dr. Robert Bridges. P '82, 226 



Biographical notice of George W. Tryon, Jr. P '88, 399 



Rutter, Cloudsley. A collection of fishes obtained in Swatow, 



China, by Miss Adele M. Fielde. P '97, 56 



See Jordan, David Stai-r, and. Cloudsley Rutter 



Ryder, Jno. A. On the evolution and homologies of the incisors 

 of the horse. P '77, 152 



Note on color variations in mammals. P '77, 272 



On the growth of Cocculus indicus. P '77, 284 



The significance of the diameters of the incisors in rodents. 



P '77, 314 



