LIBER BATRACHOPHRENOBOOCOSMOMACHIA
3- These practices A and B accomplished, and his studies
in astronomy completed, let him attempt this practice C.
C. Let the Practicus form a mental picture of the
Earth, in particular striving to realize the size of the
earth in comparison with himself, and let him not be
content until by assiduity he has well succeeded.
Let him add the Moon, keeping well in mind the
relative sizes of, and the distance between, the planet
and its satellite.
He will probably find the final trick of mind to be a
constant disappearance of the image, and the appearance
of the same upon a smaller scale. This trick he must
outwit by constancy of endeavour.
He will then add in turn Venus, Mars, Mercury and
the Sun.
It is permissible at this stage to change the point of
view to the centre of the Sun, and to do so may add
stability to the conception.
The Practicus may then add the Asteroids, Jupiter,
Saturn, Uranus and Neptune. The utmost attention
to detail is now necessary, as the picture is highly com-
plex, apart from the difficulty of appreciating relative
size and distance.
Let this picture be practised month after month
until it is absolutely perfect. The tendency which may
manifest itself to pass into Dhyana and Samadhi must
be resolutely combated with the whole strength of the
mind.
Let the Practicus then re-commence the picture,
starting from the Sun, and adding the planets one by
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