THE AETIPICUL INCUBATION OF OVA. 47 



ving are two beams of wood in which notches are 

 cut, or on which, to prevent weakening, the support 



INDOOB AFFABAIUS. 



wedges are nailed. The letter (a) shows the corner 

 of the cistern, (6) is the supply tap, and (c) is the 



