Estimate by Nevil Maskelyne of the probable expense of journey to and staying at St Helena to observe the Transit of Venus of 1761 Estimate of expences for a years residence at St Helena, and for the voyage going and returning. Includes 6 shillings per day for one year, Liquers at 5 pence per day for a year, washing at 9 pence per day, other incidental expences at 18 pence per day. Total amount £291 16s 3d. In Maskelyne's hand. 5 August 1760