Mr. A. R. Smith , Vice President, Louisville and Nashville Railroad, Louisville, Kentucky About two years ago I received from the Mexican Ambassador a request to supply a replica of the Diplodocus to the National Museum in Mexico. I took up the matter with Mrs. Andrew Carnegie, and the Carnegie Corporation and the funds for making the reproduction were generously provided. The work has been completed. The object is carefully packed in thirty-six boxes of varying sizes, cubic contents 934.57 ft., weight 10,929 lbs. I am now ready to forward the specimen to Mexico. After careful consideration and correspondence with the Mexican authorities I have reached the conclusion that the best means of forwarding the