COLUMBIAN HISTORICAL EXPOSITION, MADRID. Communication from the Secretary of State regarding the representation of the United States. February 8, 1892. 2pp. Sen. mis. doc. no. 66; 52d Cong., 1st sess. ---- Report from the committee on military affairs favoring bill (H.R. 5150) providing representation of the U.S. at the Columbian Historical Exposition at Madrid. March 30, 1892. 1p. H.R. rep. no. 923; 52d Cong., 1st sess. COMMERCIAL TRAVELLERS. Report from the committee on interstate commerce to accompany bill (H.R. 372) to permit railway companies to grant concessions to commercial travellers. February 8, 1892. 3pp. H.R. rep. no. 186; 52d Cong., 1st sess. COMMONS, JOHN R. _See_ Knight, G. W. COMPTON, H. W. Testimony as to the practical value of drawing and clay modelling in primary schools. 2pp. Clarke, I. E., Art and Industry, pt. 2, pp. 1309-1310. COMPTROLLER OF THE CURRENCY. Annual report to the 1st session, 52d Congress. December 7, 1891. Washington, 1891. 2 vols. 1.50 H.R. ex. doc. no. 3; 52d Cong., 1st sess. CONGRESSIONAL DIRECTORY. Fifty-second Congress, first session. By W. H. Michael. 1st edition corrected to December 5, 1891. Washington, 1891. 406pp., 1 pls. .25 Sen. mis. doc. no. 1; 52d Cong., 1st sess. ---- _Same._ 2d edition. Corrected to January 29, 1892. Washington, 1892. 277pp., 2 pls. .25 Sen. mis. doc. no. 1, pt. 2; 52d Cong., 1st sess. ---- _Same._ 3d edition. Corrected to May 7, 1892. 8^o. Washington, 1892. 317pp., 2 pls. .25 Sen. mis. doc. no. 1, pt. 3; 52d Cong., 1st sess. ---- Report from the committee on printing in reference to the appendix of maps of congressional districts in the Congressional Directory. February 7, 1892. 1p. Each 1.00 H.R. rep. no. 246; 52d Cong., 1st sess. CONGRESSIONAL RECORD. 52d Congress, 1st session, 1891-'92. Vol. 23, parts 1-3. Washington, 1892. 4^o. CONN, H. W. The fermentations of milk. Washington, 1892. 75pp. .35 Agr'l Dep't, office of experiment stations: Bulletin no. 9. CONSTITUTION. Report from the committee on the judiciary adversely on H. res. 43 to amend the constitution. February 12, 1892. 1p. H.R. rep. no. 294; 52d Cong., 1st sess. CONTESTED ELECTIONS. Digest of contested-election cases in the 51st Congress. Compiled by C. H. Rowell. Washington, 1891. 834pp. Sheep. 3.50 H.R. mis. doc. no. 137; 51st Cong., 2d sess. CONTRACT-LABOR. Letter from the Secretary of the Treasury relative to expenditures for the enforcement of the contract-labor law. March 11, 1892. 9pp. H.R. ex. doc. no. 162; 52d Cong., 1st sess.