He is writing a 'history of Aeronautics since the formation of this Society so far as relates to this Country'. He discusses at some length the requirements for 'attempting any initial flight'. There is an 'intimate relation here between force, pressure and weight of fabric which from neglect has ... sometimes led to failure', as in Hollands' trials. [Hollands asterisks this point and adds a lengthy ms. comment: 'Advantages of my form of Structure of Avitor (Feb '90)'] Brearey concludes that 'if propelled by a screw whilst at the same time the wing arms could be oscillated ... we might effect ascent, especially if on rails'.