1. cipher   secret code used to encrypt messages.   animals of a region or era.   chemistry of changing baser metals into gold.   substance formed by decay of organic material.   Hint Half-n-half Clue   2. cistern   resemblance to remote ancestors than parents.   substance formed by decay of organic material.   reservoir or tank for water.   collection of stars or brilliant personalities.   Half-n-half Clue   3. friction   attrition by rubbing or disagreement.   device used to maintain equilibrium.   triangular tract of mud or sand at river's mouth.   swirling motion of water or air.   Half-n-half Clue   4. assumption   something taken for granted or usurping authority.   reduction in size.   decay; breaking into component parts.   working of the brain or thought.   Half-n-half Clue   5. conduit   science dealing with sound.   channel for fluid flow or aqueduct.   reservoir or tank for water.   drug or treatment preventing infection.   Half-n-half Clue   6. conifer   ability to produce desired effect.   masses of leaves or leafage.   maker of maps.   tree bearing fruit-cones.   Half-n-half Clue   7. chisel   sharp-edged tool used for cutting.   spread of disease by contact.   science dealing with sound.   attrition by rubbing or disagreement.   Half-n-half Clue