| Description | 10 envelopes containing loose sheets of notes, thought to be work on the HMS Challenger material, and thought to be by W. Mitten. Envelopes have been sorted in to the following island groups:
- MS/101: Otway (?), Gulf of Pines, Patagonia
- MS/102: Santa Rosa de Los Andes, etc.
- MS/103: Tahiti
- MS/104: Hawaii - Sandwich Islands
- MS/105: Malamon, off Basilan, Philippines
- MS/106: Ternate
- MS/107: Amboyna
- MS/106: Banda
- MS/109: New Guinea
- MS/110: Tonga Tabu |