Not further identified.
M's letter was referred back to him on 15 October 1859 annotated: '"Boiler" cannot be charged agst the authy quoted'. The relevant authority has not been found; the boiler was almost certainly by the metal worker Gebendinger.
The index entry for this item includes a fourth account, 'F. Mueller £2.10.0', but this does not appear in the register; M was probably advised informally to claim the sum involved, presumably a reimbursement of some kind, in a different way.
Letter not found; item is a register entry only, of a set of invoices submitted on 21 September 1859.
Please cite as “FVM-59-09-21,” in Correspondence of Ferdinand von Mueller, edited by R.W. Home, Thomas A. Darragh, A.M. Lucas, Sara Maroske, D.M. Sinkora†, J.H. Voigt† and Monika Wells accessed on