Mr Chadwick has suggested that the reliability of harbour tidal observations made a second analysis of the observations of the present year. These precise analyses having been based on more comprehensive data.
On being informed that the data were insufficient, Lord Derby would be glad if you ascertain from Mr Probats what charge he would make for this work (presuming that he is willing to undertake it) in addition to the £62.2. which had been already agreed upon as the charge for the first year.
I.B.