Senor Don Isaac Ochoterena, President

Instituto de Biologia, Universidad Nacional,

Mexico, D.F., Mexico



My dear Doctor Ochoterna, President,



I desire gratefully to acknowledge the receipt of your communication dated the 28th of November with its accompanying note written in English, which were received by me yesterday evening, December 9th.  I take the first opportunity to reply and to express my hearty appreciation of the kind sentiments of good-will expressed by you toward myself as the representative of Mrs. Andrew Carnegie and the Carnegie Museum, through whom the gift of the replica of the skeleton of the Diplodocus has been made to Mexico.



It was only recently that it came to my knowledge that