Jessie - Strange Alias Problem

[S. P. Molnar]

I am running an up to date Jessie with the bash shell and have 
encountered a very strange problem.

I have the following line in my /home/comp/.bashrc;
 alias l='ls -l --color'

If I source the file in my /home/comp it works - once!, and only in my 
home directory!!!  If I change to another directory - it doesn't work!

I'm not even sure what to Google at this point.

Any pointers tot he solution to this problem will be much appreciated.

Thanks in return.

--
Stephen P. Molnar, Ph.D.        Life is a fuzzy set
www.Molecular-Modeling.net      Stochastic and multivariate
(614)312-7528 (c)
Skype:  smolnar1