Early in 1909--the memorable year when M. Bleriot was firing the
enthusiasm of most engineers by his cross-Channel flight; when
records were being established at Rheims; and when M. Paulhan won
the great prize of L10,000 for the London to Manchester flight--
Mr. Green conceived a number of ingenious ideas for an aero
engine.

One of Mr. Green's requirements was that the cylinders should be
made of cast-steel, and that they should come from a British
foundry. The company that took the work in hand, the Aster
Company, had confidence in the inventor's ideas. It is said that
they had to waste 250 castings before six perfect cylinders were
produced. It is estimated that the first Green engine cost
L6000. These engines can be purchased for less than L500.

The closing months of 1909 saw the Green engine firmly
established. In October of that year Mr. Moore Brabazon won the
first all-British competition of L1000 offered by the Daily Mail
for the first machine to fly a circular mile course. His
aeroplane was fitted with a 60-horse-power Green aero engine. In
the same year M. Michelin offered L1000 for a long-distance
flight in all-British aviation; this prize was also won by Mr.
Brabazon, who made a flight of 17 miles.

Some of Colonel Cody's achievements in aviation were made with
the Green engine. In 1910 he succeeded in winning both the
duration and cross-country Michelin competitions, and in 1911 he
again accomplished similar feats. In this year he also finished
fourth in the all-round-Britain race. This was a most
meritorious performance when it is remembered that his Cathedral