126 Corwan and Langstroth bricks continued from (A)
March 29th 1888. At the breakfast table this am, a new and probably 
valuable thought occurred to me in connection with those bricks, viz in building 
hollow walls to use only enough of my [illegible] bricks with corwin shoulders to get the 
means of tying at intervals the walls front to rear so as to get all the strength needed. 
Or if bricks without the corwin shoulders are used, then there may be made plain only 
using enough for tying, over the [illegible] hollows. 