I shaped metallic tie, using only one say 3 inches or at most 
4 inches wide, and tie with this just as often as is necessary 
to get all needed strength. To get an 11 inch wall 
use 3 [illegible] of corwin's brick and one of [illegible] rectangular 
to get 12 inch wide three of corwin two of hollow rectangular 
etc. A four inch wall takes full length of common brick for a 
tie probably for any greater thickness of walls 16, 18, etc. The 
G tie would be the best plan, a solid rectangular brick 
of any desired length might be used. [illegible] when the 
common are bought so close together it might at first view seem 
as though the [illegible] were not sufficient, it must be [illegible] 
the hollow rectangular as far as more air space is concerned 
makes up and [illegible] the leading [illegible] 
thought in these various plans for hollow walls is HB corwin 
idea of brick with shoulders of opposite size [illegible] 
shoulders to be half the thickness of the bricks. The next 
thought is it now seems to me is the [illegible] of hollow 
rectangular bricks in combination with the [illegible] by which 
the hollows are multiplied and yet the wall is as strong or 
perhaps stronger than a solid one of same thickness. [illegible] 
or with common brick the [illegible] plan having the charm of 
beautiful simplicity and using only [illegible] hollow brick 
and even then might be [illegible] with where it [illegible] 
[illegible] old bricks both ideas seem to me to 
make strong and valuable patents, the last one of course 
requiring license under the first period perhaps at least 12 
[illegible] might be taken out from brick a 
the cut out piece being say not over 1/8 inch at top of A and [illegible] 
[illegible] to the bottom so as to be one inch wide. 



