\ BooknewsBentley, a Vermont farmer who spent a lifetime (1865-1931) studying and photographing snow crystals was the originator of the saying: "No two snowflakes are alike." Blanchard, a retired atmospheric scientist, pays tribute to this initially ridiculed autodidact. Includes a few of Bentley's 5,000-plus landmark photos and family pictures. Annotation c. by Book News, Inc., Portland, Or.\ \