160 LIST OF CONTRIBUTORS. 



Richardson, Jos. G. Continued. 



Ou the blood of animals poisoned by rattlesnake venom. P 



'69, Biol. 14 



On the occurrence of white blood corpuscles. P '69, Biol. 14 



On Menobranchus. P '69, Biol. 15 



Report on Myiarchus cinerascens. P '70, Biol. 9 



On pulmonary elastic tissue. P '71, Biol. 7 



Ridgway, Robert. Notices of certain obscurely known species of 

 American birds. P '69, 125 



A new classification of the North American Falconidae with 



descriptions of three new species. P '70, 138 



On Nisus cooperi (Bonaparte) and Nisus gundlachi (Law- 



rence) . P '75, 78 



— On the buteonine subgenus Craxirex Gould. P '75, 89 



— Studies of the American Falconidae. — Monograph of the 



genus Micrastur. P '75, 470 

 Ringueberg, Eugene N. S. New fossils from the four groups of 

 the Niagara period of western New York. P '84, 144 



Some new species of fossils from the Niagara shales of west- 

 em New York. P '88, 131 



Roberts, S. Raymond. Compressed peat. P 75, 333 



Biographical note on William L. Mae-tier. P '88, 446 



Roessler, A. R. On tin stone from Missouri. P '68, 142 

 Rogers, Henry D. Analysis of some coals of Pennsylvania. J 



vii, 158 



Forms of coal. P '41, 7 



Age of the coal formation of the vicinity of Richmond. 



P '42, 142 



Remarks on earthquakes. P '42, l&l 



Note on Posidonomia minuta. P '43, 250 



Stratigraphical features of the environs of St. Petersburg. 



P '43, 256 



— Note on geology of Western States. P '43, 272 



— Seventeen-year locust. P '43, 277 



Rogers, Robert E. On the debitumenization of coal. P '59, 162 



On Richie's modification of the Riihmkorff apparatus. P 



'59, 90 



On the debitumenization of coal and propagation of concus- 



sion. P '60, 53 



— On diminished yield from petroleum wells. P '60, 147 



— On ;i modification of (lore's apparatus. P '60, 148 



