Create table does not get replication

Hello,

                 I have replicated database R1 to database R2.As per the concept any changes made in R1 should reflect in R2 automatically. Replication process is working fine.But the problem i encounterd was, when i created a new table in R1 database,That table did not got replicated to R2 database . Please give any solution to my problem . What setting i need to do when i keep for replication.

Regards

Manoj