The New York Floating Derrick (Bishop's) has recently been taken alongside of this vessel, for the purpose of removing her heavy machinery. Thus far one main cylinder and piston, weighing 30 tons, one air pump cylinder, and the walking beam, altogether weighing about 80 tons, have been taken out. The Patent Office is the inventor's treasury —it contains more valuable deposits and yields its stockholders more mechanical, if not pecuniary profit than any other institution.