146 LIST OF CONTRIBUTORS. 



Pease, Wm. H. Observations on the geology and natural history 

 of Mexico. P '48, 91 



Pease, William S. On fossils from Maryland. P '47, 242 



Peirce, Jacob. On a hybrid between the guinea fowl and pea- 

 cock. P '48, 35 



Pennell, Francis W. Flora of the Conowingo barrens of south- 

 eastern Pennsylvania. P '10, 541 



Pepper, W. On a cyst of the Fallopian tube. P '69, Biol. 4 



On muscular fibre in typhoid fever. P '69. Biol. 13 



On wandering delirium in tuberculosis. P '69, Biol. 4 



Perkins, Henry Farnham. The development of Gonionema, 



murbachii. P '02, 750 

 Phillips, Everett Franklin. Structure and development of the 



compound eye of the honey bee. P '05, 123 

 Phillips, John S. Description of a new American species of the 



genus Helix. 3 viii, 182 



Descriptions of two new American species of Helix. P '41, 27 



Effect of conflagration on atmosphere. P '41, 46 



Dates of publication of the early volumes of Journal. P '41, 57 



Nomenclature of natural science. P '41, 85 



On Helix bidentifera, a rectification. P '41, 133 



Description of a new fresh-water shell and observations on 



Glandina obtusa Pfeif. P '46, 66 



On a meteor. P '51, 236 



Phillips, Richard J. See Fowler, Henry W., and Richard J. 



Phillips 

 Pickering, C. Seventeen-year locust. P '43, 277 



Vision in the Balani. P '48, 2 



On estimates of the length of the year. P '48, 58 



On the history of anthracite. P '60, 2 



On photographs of Tasmanians at the Centennial Exposition. 



P '76, 169 



The Australians. P '76, 262 



Pierce, C. Newlin. On Stephanoceros. P '75, 121 



Living organisms in the pulp cavity of teeth. P '75. 262 



Remarks on Hawaiian crania. P '93. 224 



Edentulous jaws. P '93, 13 



Pilsbry, Henry A. On the helicoid land molluscs of Bermuda. 

 P '88, 285 



New and little-known American molluscs, No. 1. P '89. 81; 



No. 2, 411 ; No. 3, '90, 296 



