The advantages of registering earthquake shocks were first briefly noticed. 1. Such registers would shew whether, as supposed, the shocks were more frequent and violent during certain states of weather, and particular months of the year. If this were ascertained, some light would be thrown on the cause of the shocks, in so far at least that it must be a cause which can be affected by atmospheric influences. 2. They would serve to shew whether the shocks that occur in this country coincide in time with those occurring in distant countries, and whether therefore they all originate from a common source, or are otherwise connected.