U. S. & CAN.] THE NATURALISTS' DIRECTORY. 181 
4390 Potter, Frederick G., 49 W. 83rd St., between 8th and 9th 
Aves., New York, N. Y. Geol., Ent. C. Ex.* 
4391 Potter, W. B., A.M., E.M., Prof. Mining and Metal., Wash- 
ington Univ., St. Louis, Mo. Geol., Metal. C. Ex. min- 
erals, ores and fossils. 
4392 Potter, Wm. P., 60 Prospect St., Norwich, Ct. Con., Min., 
Geol., Numis., Postal Cards, Curios. C. Ex.* 
4393 Potter, William R., Foot of Calais St., Providence. R. I. 
GeoL, Min.. Chem., Metall. C. Ex. 
4394 Potts, Edward, 228 S. 3d St., Philadelphia. Pa. Mic., Invert. , 
Zool. Desires spec, of Am. and foreign F. W. sponges. 
C.* 
4395 Pough, F. H.. 146 Hicks St., Brooklyn, N. Y. Geol., Min., 
LithoL, Chem., Metall., Physics, Elect., Ast. C. Min. Ex.* 
4396 Pound, Roscoe, 1632 L. St., Lincoln, Neb. Bot., Fungi. C. 
Ex.* 
4397 Powell, J. W., Ph.D., LL.D., 910 M St., N. W., Washington, 
D. C. Anth., Geol* 
4398 Powell, Jehu Z., Ph.D., M.D., 220 6th St., Logansport, Ind. 
Bot., Ghent., Mic., Anat. C. Ex.* 
4399 Powers, Jennie B., Entomologist, Brattleboro Nat. Hist. 
Soc., 24 Birge St., Brattleboro, Vt. Ent.* 
4400 Praeeer, Wm. E., Keokuk, Iowa. Orn. C. Ex.* 
4401 Pratt, F. C., Division of Ent., Dept. Agric., Washington, D. 
C. Ent., Coleopt.* 
4402 Pratt, Rev. (ieo. B., 68 Ogden Ave., Chicago, 111. Orn., 
Zool.* 
4403 Pratt, Julius H., Ph.D., Milwaukee Acad., Milwaukee, Wis. 
Min., Inorg. ('hem., Phys., Elect* 
4404 Pratt, R. W., Parker, Turner Co., South Dak. Photog^ 
Numis., Philately, Ent. C. Ex.* 
4405 Pratt, Stillman B., South Wey mouth, Mass. Anth* 
4406 Pratt, W. H., Minneapolis, Minn. Cor. Sec. of the Miiro. 
Acad. of Nat. Sci. Arch., Physics, Con. 
4407 Pratt, Wm. H., 49 Clifford St., Taunton, Mass. Diatoms, 
Mic. C. Ex.* 
4408 Prentice, Charles F., 178 Broadway, New York, N. Y. Op- 
ticist, (espec. Physiol. Optics), Physics.* 
4409 Prentice, Wm., 1009 Liberty bt., Pittsburg, Pa. Bot., Geol., 
Min., Mic., Arach. C. Ex.* 
4410 Prentiss, Albert N., Prof. Bot. and Abor., Cornell Univ., 
Ithaca, N. Y. Bot* 
4411 Prentiss, D. W., M.D., 1101 14th St., N. W., Washington, D. 
C. Orn., Nat. Hist., Medicine. C* 
4412 Prentiss. Elliot C., 1101 I4th St., N. W., Washington, D. C. 
GeoL, Min., Cry stall. C. Min. Ex.* 
4413 Prescott, A. B., Dir. Chem. Lab., Univ. of Mich., Ann Ar- 
bor, Mich. Analyt. and Org. Chem. 
4414 Preston, Charles H.', S.B., Danvers, Mass. Bot., Min., Chem., 
Mic. C. Bot.* 
4415 Preston, H. L., Ward's Nat. Sci. Estab., Rochester, N. Y. 
Min., Geol. 
