LOOKING THROUGH A SOLID BRICK 



VERY common exhibition by street showmen, 

 and one which never fails to excite surprise and 

 draw a crowd, is the apparatus by which a person 

 is apparently enabled to look through a brick. 

 Mounted on a simple-looking stand are a couple of tubes 

 which look like a telescope cut in two in the middle. Look- 



Fig. 34. 



ing through what most people take for a telescope, we are 

 not surprised when we see clearly the people, buildings, 

 trees, etc., beyond it, but this natural expectation is turned 

 into the most startled surprise when it is found that the 

 view of these objects is not cut off by placing a common 

 brick between the two parts of the telescope and directly 

 in the apparent line of vision, as shown in the accompany- 

 ing illustration, Fig. 34. 



