The fourth dimension

THE SIMPLEST FOUR-DIMENSIONAL SOLID 165

the first block, but in their proper positions they could

not be in space with the first set.

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Esc: cube is the begin-

ning of the first tesseract

going in the fourth dimension. Fig. 101.

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Each cube is the beginning of the second tesseract.

3 represents 27 cubes

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Each cube is the beginning of the third tesseract,

(forming a larger cube) which are the beginnings of the tesseracts, which begin two inches in the fourth direction

from our space and continue another inch,