The answer to the formal vrs formol debate is, of course, to use the 
term "formalin saline", unless, of course, somebody knows different!

In dentistry, and I have told this little tale before, normal saline is 
often used to irrigate root canals prior to root filling.  Quite a 
different result is achieved if the terms normal saline and formal 
saline are confused!  And, Sod's Law being what it is,it has  
hapened!

Travel safely,

Are you being deliberately provocative by stating that "from?l saline 
has long since been superceded by other solutions?

Russ Allison, 
Dental School
Cardiff
Wales