THE HAMILTON ASSOCIATION. 85 
OTHER WORLDS THAN OURS. 
Synopsis of a paper read before the Astronomical Section of the 
Hamilton Scientific Association, December 5, 1902. . 
BY G. P. JENKINS, F. R. A. S. 
The lecturer, being introduced, began by saying his sub- 
ject would be Other Worlds Than Ours. He wished it were 
possible to show them through the telescope itself, but as it was 
not possible they had a very good substitute in the lantern, as 
the views were mostly photographs of the actual objects, which 
he could assure them, from personal observations, looked just 
like the telescope revealed them. 
Mr. Jenkins then proceeded to describe nearly fifty views 
in the following order: His own Newtonian telescope, rela- 
tive size of the sun and earth, sun spots, solar eclipses, red 
flames of the sun, phases of Mercury and Venus, moon at first 
quarter, Copernicus, full moon, lunar eclipses, chart of Mars, 
views of Mars, Tupiter, Saturn, Donati’s comet, Coggia’s comet, 
Ursamajor, milky way, Germini, as seen by the naked eye and 
also through the telescope, star clusters, Annular Nebulee, spiral 
Nebulz and the great star cloud in Orion. 
Speaking of sun spots, the lecturer showed thirteen views 
of the sun spot, which he had observed for so many days, and 
whose size was, according to best measurement, over three 
times the size of the earth. 
In describing the moon he pointed out that there were no 
seas on it, no more than there was a man in the moon, but was 
found to be composed of rocky mountains, volcanoes, rills and 
plains. While the sun was full of fire, energy and change, the 
moon seemed to be lifeless, silent and changeless. Its distance 
was atrived at by trigonometry in preciselv the same way as the 
distance of any terrestrial landmarks were secured. He showed 
a beautiful photograph of the crescent moon, taken by himself 
