oint, as I shall try to show. What is the reason that our
position in sleep should be of any consequence? Because our body must
be in a position at harmony with the main magnetic currents of the
earth; but as these currents are not the same in all parts of the world
the positions of the sleeper must, therefore, vary.

There are three main magnetic currents on our earth--viz., in the
northern hemisphere, from north pole towards the equator; in the
southern hemisphere, from south pole towards the equator; these two
currents meeting in the torrid zone continue their combined course from
east to west. So the position of the sleeper must vary according as he
finds himself to the north or south of the torrid zone or within it.

In the north frigid or temperate zone, he has to lie with his head
northward; in the southern, southward; in the torrid zone, eastward--
in order that the magnetic current may pass through him from head to
foot without disturbance, as this is the natural position for
magnetization.

The following diagram may give a clearer view of the case, and thus help
us to answer the second part of the question, whether and when we ought
to lie on the right or the left side, on the stomach or on the back:--

[[Diagram here]]

The able writer of "How Shall we Sleep?" shows, in his cross diagram,
that he thinks the head to be entirely positive and both feet negative.
I think that this is not the case, but that the right side of the head
and the left foot are positive, and the left side of the head and the
right foot negative, and similarly the right hand is negative and the
left hand is positive.

As the north pole is positive and the left side of the head negative,
the natural position in sleep for those living within the northern zones
would be on the right side, head northward; and it is obvious that in
the southern zones the position must be exactly the reverse. As to
those who live under the tropics, lying on the stomach seems to me to be
the most natural position, since the left, or negative side of the head,
is turned to the north or positive current, and vice versa.

For many years I and my family have been sleeping with our heads either
to the north or the west (the right position in our hemisphere, in my
opinion), and we had no occasion to regret it; for from that time
forward the physician has become a rare visitor in our house.

Mr. Seeta Nath Ghose says, in his interesting paper on "Med