laa. ABSTRACT OF PROCEEDINGS. 
26. Compressed air flying machine, showing the abolition of the 
crank and connecting rod. Cord (hanging down) was put round 
the left wrist and withdrew the wire that allowed the spring to 
open the stop valve when the machine was let go. Sand glass 
hanging to right wrist for taking time of flight. See the lead on 
the end of the breaking stick forward showing that nearly all 
the dihedral surface aft was merely guiding surface and not lifting 
surface. Two air pumps. 
27. A larger compressed air flying machine. See reducing 
valve. Wing stroke counter. Spring valve gear. Indicator. 
Cooling tank for air pump. 
28. Compressed air bow screw machine. Fixed cylinders, 
Reducing valve, revolution counter. Counterpoise to the left of 
the picture on the body plane to counteract torque of screw. 
Splices where sticks have been broken. 
29. An excellent compressed air flying machine. Given to the 
Field Columbian Exhibition, Chicago, and now in the Smithsonian 
Institution, Washington. 
30. Wave propelled vessel, 124 ibs. weight. Has been improved 
till it now goes 2 of a mile per hour against the wind. It will 
continue going till it is worn out. The propeller is forward to 
keep her head to wind. Various experimental propellers to clamp 
on to the bow. The clamp is to enable the propellers to be tried 
at different depths. 
31. A duplicate of the engine sent to America, shows spring 
valve gear worked by one of the cross-head pins. Wing stroke 
counter, 
32. Steam engine that flaps wings of the same length and area 
as those shown in the photograph No. 29, making the same number 
of flaps per minute. See the abolition of spring valve gear. Wing 
stroke counter. Feed pump ram a continuation of piston rod. 
Flash boiler. Methylated spirit fuel and burner. If this engine 
was loaded up with water and spirit till it was the same weight 
