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know whether the person who pointed out the danger is reliable or not.
This digression has been considered necessary because irreverence for the great seers of our land and want of faith in their injunction has been one of the fruits of foreign rule in our country.
SELECTION OF SITE In the selection of the site rules have been framod according to the owner's profession (which in our country is called Varņa or Caste). This is again a signal for objection by the modern student of Engineering, What has the soil of the site or the frontage direction of a house to do with the qualities, or the prosperity of the owner ?' is easily asked. That soil affects the constitution of animals and their quali. ties is easily seen by noting the geographical conditions where different animals thrive with different qualities. This must apply with greater force to man, the most sensitive of them. So much for infusing regard for the words of our texts on the very first topic they have taken up.
TRUE EAST TO WEST LINE
The first preliminary in planning is the determination of the true east and west and north and south lines. For this purpose a peg of 12 Angulas or 24 Angulas like a gnomon (one aigula = 3/4 of an inch) is fixed upright and a circle is described on the ground with twice the length of the peg as the radius. A pin point is fixed on the top of the peg. The points where the shadow of the pin point of the peg just ends at the circumference of the circle are marked on the circle both in the morning and in the evening. The line joining them will be the true East to West line and a line cutting it perpendicularly will be the North to South line.
But this will be exactly true if the sun were to rise in the same point in the east and set in the same point in the
