| Description | Written from 18 Duke Street, Westminster, London. The letter requests Smyth direct the firm of Milne & Son to send Brunel an example of the velocity anemometer and, later on, send him a direction anemometer and leaves Smyth to order whatever altitude instruments that he thinks best although Brunel mentions the design that he favours. Brunel mentions the possible difficulty of getting a floating log, especially when considering the speed of the ship towing it, to float underwater rather than at the surface where it is likely to get choked with floating weed and debris. |