54 THE NATURALISTS' DIRECTORY. [U. S. & 
1290 Crittenden, A. R., Middletown, Ct. GeoL, Con. 
1291 Croasdale, Stuart, Ph.D., Holden S. and M. Co., Aspen, Colo. 
Chan.* 
1292 Crocker, Francis B., Prof. Elect. Engineering, Columbia 
Coll., New York, N.Y.* 
1293 Croissant, Rev. J. D., Washington, D.C. GeoL C. Ex. for- 
eign for home specimens. 
1294 Crooker. O. E., Univ. of Wis., Madison, Wis. Mic., Gen.. 
BioL, Orn., OoL, Tax. C. Ex.* 
1295 Crooks, Will A., Oilman, 111. Min., Photog., Orn., OoL, Tax. 
C. Ex.? 
1296 Crosby, Henry F., 37 So. Portland Ave., Brooklyn, N.Y. 
Bot: Crypt. Plants, Algce, Desmids, Invert., Mic., Protozoa.* 
1297 Crosby, W. O., Asst. Prof. Structural and Econ. GeoL, Mass. 
Inst. Tech. and Asst. in the Mus. of the Boston Soc. Nat. 
Hist., Boston, Mass. GeoL, Min* 
1298 Cross, Charles R., Thayer Prof. Physics, Mass. Inst. Tech., 
Boston, Mass.* 
1299 Cross, Rev. Roselle T., York, Neb. Min., Cry stall., Ant. C. 
Ex.* 
1300 Cross, Whitman, Ph.D., U.S. Geol. Surv., Washington, D.C. 
GeoL. Min., LithoL* 
1301 Crosscup, Geo. W., 911 Filbert St., Philadelphia, Pa. En- 
graver of Scientific Illust., by all methods; Ives (Half-tone) 
process a specialty. Photog.* 
1302 Crotsenburg, C. N., Photographer, Columbus Junction, la. 
Phys., Elect., Orn., OoL, Tax. C. Ex.* 
1303 Crozier, A. A., M.Sc., Botanist, Ann Arbor, Mich. Agric.* 
1304 Cruikshank, James, LL.D., 208 So. Oxford St., Brooklyn, X. 
Y. Forestry, Phys., Geog. Dist., Arith.* 
1305 Crump, M. H., Bowling Green, Ky. Geol., Palceo., Min. C.. 
Ex. 
1306 Crump, Shelley G., Pittsford, Monroe Co., N.Y. Invert., 
Moll. C. Ex. L.F. W. and Marine Shells.* 
1307 Crutcher, Howard, Prof. Anat., Columbia Bldg., State and 
Washington Sts., Chicago, 111. Human Anat.* 
1308 Cruzan, Rev. W. S., Sulphur Springs, Texas. OoL, Eth., 
Hort., GeoL, Min., ZooL, Mammals, Orn.., Tax., Ent: Lepid. 
C. Ex.* 
1309 Culin, Stewart, Univ. of Pa., Philadelphia, Pa. Anth.* 
1810 Culley. John L., Civil, Mech., Min. and Landscape Eng., 29 
Blackstone Bldg., Cleveland, O. Bot., Hort., GeoL, Min., 
Chem., MetalL, Phys., Elect., Ast., Geog., Dist. PhiloL, 
Mammals.* 
1311 Cullum, Gen. Geo. W., U.S.A., 261 Fifth Ave., New York,N, 
Y. Eng.? 
1312 Gulp, A. N., Constantine, Mich. Arch.? 
1313 Culp, Chas. H.. San Felipe, Calif. Orn., OoL, Tax. C. Ex.* 
1314 Culver, C. W., 533 9th St., La Salle, 111. Palceo., GeoL, Min.,. 
Mollusks, Protozoa. C. Ex.* 
