Concert

Festival of the Nile. Sanders Theatre, 7:30 p.m. $20, $17. 496-2222.

Exhibits

Bunting Institute. Through March 31. "The Mending Project."

Fogg Art Museum. Through April 2. "Chasing Shadows: Photographs from the Collection." The concept for the show is embedded in its title: it speaks to the unique qualities of photographic processes, to the history of the medium, and to the history of the collection under the stewardship of the late Davis Pratt.

Through July. "Shades of Significance: Tonal Values in Abstract Art." From its perceived origins in Cubism, through its dominance of the post-war American art scene, to its current coexistence with other approaches to imagemaking.

Through summer 1995. "Selections from the Joseph H. Hazen Collection." This exhibition offers viewers a rare opportunity to view privately owned works by some of the great masters of the late 19th and early 29th centuries. Included are works by Braque, van Gogh, Kandinksky, Modigliani, Leger, Picasso, and Toulouse-Lautrec.

"France and the Portrait, 1799-1870." This installation of works from the permanent collections explores the changing conventions and practice of portraiture in France between the rise to power of Napoleon Bonaparte and the fall of the Second Empire.

Isabella Stewart Gardner Museum. 280 The Fenway, Boston. 566-1401. Through June 4. "Dennis Miller Bunker and His Circle" features more than 30 works of Bunker and some of the most celebrated names in American painting in the late 19th century.

Museums of Cultural and Natural History. Ongoing. "Birthstones" Explores the cultural and natural history of birthstones, and how perceptions of these precious and semiprecious gems have been influenced by mythology and astronomy.

Peabody Museum Ongoing. "Encounters with the Americas."

Ongoing. "Ju/wasi: Bushmen of the Kalahari."

Ongoing. "Worlds in Miniature, Worlds Apart: Dioramas, Models, and Mannequins in the Peabody Museum."

Ongoing. "The Hall of the Northern American Indian."

Ongoing. "Ware Collection of Glass Flowers."