Chesapeake Bay will be discussed in an Eastern Shore lecture series beginning tomorrow.

The four talks, given by scientists from the University of Maryland's Horn Point environmental laboratory in Cambridge, are free and open to the public. All lectures begin at 7:30 p.m. For more information, call 1-410-228-9250. The schedule:

* Feb. 26: Dunning lecture hall, Washington College, Chestertown.

* March 18: Talbot County Historical Society, Easton.

* May 20: Chesapeake Bay Maritime Museum, St. Michaels.

* Sept. 23: Cambridge Public Library.