6i 



2. One strip of wood i8 inches 

 long, 3^ inches wide and ^ inch 

 thick. 



3. Two cleats 3)^ inches wide, 

 ^ inch high and y^ inch thick ; 

 and two cleats one inch wide and as 

 high and thick as the others. 



4. A strip of cork or linoleum 1 7 

 inches long and a little less than an 

 inch wide. 



To construct the spreading board 

 take the two narrow strips of wood, 

 place them one-fourth inch apart 

 and on the under side fasten them 

 across the ends to the longer cleats. 

 Then on the same side as the cleats 

 tack the piece of cloth or linoleum 

 over the space between the strips of 

 board, and as the cleats are one-half 

 inch wide the linoleum should cover 

 all the space left. Then midway the 

 boards fasten the two smaller cleats. 

 Fig. 8 shows a cross-section of the 

 spreading board just in front of these 

 two middle cleats. Now it is ready 

 for the bottom board which will fit 

 exactly if directions are followed, 



and this completes it. The space between the two upper 



boards is wide enough to take in the body of the moth or but- 

 terfly. The cork or 



linoleum below the 



space will hold firmly 



the pin on which the 



butterfly is impaled. 



The [cleats hold the 



top and bottom boards 



apart and so protect 



the points of the pins. 



Fig. 7. A spreading board. 



Fig. 



8. A cross section of spreading board in 

 front of the cleat "a^" in Fig. 7. 



