Letter to George H. Cave, authorizing James Cromer Watt to accompany Cave for 15 days travel in Sikkim 'for the purpose of seeing rhododendrons.'
141 pages. Bound ledger with printed columns, labelled: 'Serial Number', 'Name of Plant', 'Divin. of Sikkim', 'Where collected', 'Date of Coll. of specimen', 'Serial No. in Herbm.', 'Serial No. in Ind. Gdn.'
Pages arranged by plant family.