example, suppose we have to find the Compartment assigned to ym. We say to ourselves “y has the West Half; and m has the Inner portion of that West Half.”
Again, suppose we have to find the Cell assigned to x′ym′. We say to ourselves “x′ has the South Half; y has the West portion of that South Half, i.e. has the South-West Quarter; and m′ has the Outer portion of that South-West Quarter.”]
The Reader should now get his genial friend to question him on the Table given on the next page, in the style of the following specimen-Dialogue.
| Q. Adjunct for South Half, Inner Portion? A. x′m. Q. Compartment for m′? A. The Outer Border. Q. Adjunct for North-East Quarter, Outer Portion? A. xy′m′. Q. Compartment for ym? A. West Half, Inner Portion. Q. Adjunct for South Half? A. x′. Q. Compartment for x′y′m? A. South-East Quarter, Inner Portion. &c. &c. |
TABLE IV.
| Adjunct of Classes. | Compartments, or Cells, assigned to them. |
| x | North Half. |
| x′ | South 〃 |
| y | West 〃 |
| y′ | East 〃 |
| m | Inner Square. |
| m′ | Outer Border. |
| x y | North-West Quarter. |
| xy′ 〃 | East 〃 |
| x′ y | South-West 〃 |
| x′y′ 〃 | East 〃 |
| x m | North Half, Inner Portion. |
| x m′ | 〃 〃 Outer 〃 |
| x′ m | South 〃 Inner 〃 |
| x′ m′ | 〃 〃 Outer 〃 |
| y m | West 〃 Inner 〃 |
| y m′ | 〃 〃 Outer 〃 |
| y′ m | East 〃 Inner 〃 |
| y′ m′ | 〃 〃 Outer 〃 |
| x y m | North-West Quarter, Inner Portion. |
| x y m′ | 〃 〃 〃 Outer 〃 |
| x y′ m | 〃 East 〃 Inner 〃 |
| x y′ m′ | 〃 〃 〃 Outer 〃 |
| x′ y m | South-West 〃 Inner 〃 |
| x′ y m′ | 〃 〃 〃 Outer 〃 |
| x′ y′ m | 〃 East 〃 Inner 〃 |
| x′ y′ m′ | 〃 〃 〃 Outer 〃 |
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