Account of the Income and Expenditures of the British Museum (Special Trust Funds) for the Year Ending the 31st of March 1887, and Return of the Number of Persons Admitted to Visit the Museum in Each Year from 1881 to 1886, Both Years Inclusive, and the British Museum (Natural History) in Each Year from the Date of Opening to 1886 Inclusive : Together with a Statement of the Progress Made in the Arrangement and Description of the Collections, and an Account of Objects Added to Them in the Year 1886