One of the centres of the ancient Quichua civilization was around Lake Titicaca.
Besides, the bite in the neck is paralysing, because the cervical nerve- centres are affected.
In general, one begins by supposing that the material phenomena are produced first; they consist, for instance, in the working of the nervous centres.
He had to arrange the size of the orbits that suited best, then the positions of their centres, both being supposed excentric with respect to the sun; but he could not get any such arrangement to work with uniform motion about the sun.