It might be that this airspace at top would very greatly facilitate 
the molding of A brick. After the most [illegible] 
[illegible] it seems to me that my best [illegible] is to
file a [illegible] and wait for the development of the corwin 
patent, otherwise there might be some risk that the [illegible] 
of two patents might hinder instead of helping those whom 
I most wish to aid, and have the appearance of an attempt 
to take away from the merit of the first [illegible] 
the whole idea of such brick for hollow walls etc originated 
[illegible] which is not made public and cannot [illegible] 
can have no such effect it merely presents some other party which 
might invent my variations from stepping in to claim a patent 
in case too of my death a [illegible] if the modification is not 
[illegible] would be more available then more [illegible] ready 
June 22nd 1885 it has seemed to me that the groove for the metallic 
Tie can be better got as follows 
show [illegible] bottom [illegible] 
[illegible] and has I propose to lighten it [illegible] 
fasten a [illegible] A 3/6 x 4 1/2 [illegible] B 1 1/2 x 5 
[illegible] and about 16 inches [illegible] 
[illegible] A and B brick a great [illegible] and making the idea of a 
hollow wall [illegible] condition of the two 
kinds of hollow brick etc now it has occurred to me that 
hollow wall better than any I know of except the [illegible] 
[illegible] without using the corwin brick thus [illegible] 
bricks all rectangular for two outside cover the outer ones 
make the hollow as before suggested and for the inside



