To run and work with Jupyter Notebook on the Geography Linux Cluster, open two instances of PuTTY. Double click the name of the first saved session ("arch" in the screenshots) in one window and then open the second session (i.e. "arch-port") in the other. Considering that these windows respectively serve to replace the commands commented "login to gateway" and "tunnel to gateway" in the section On Linux/ Mac OS X, simply complete the remaining instructions to run and connect to the Notebook server.