[SOC] Batteries in Parallel

[Tom McCulloch]

Hi,
 Definitely an SOC question here:

1)  If I put two of those little 3 volt disc batteries (both the same type 
and number) in parallel will I get the equivalent of a 3 volt battery that 
lasts twice as long (more or less)?

2)  Would these 2 batteries be in parallel if I connected the two positive 
ends together and the two negative ends together.  Should I then run one 
wire from the positive ends and one from the negative for use in the 
circuit?

Thanks
Tom
WB2QDG