Book excerpt: More of Ogden Nash's poems have come to light, both in the voluminous Nash collection at the University of Texas at Austin, and in family letters and papers. So his daughters have once again produced The Best of Ogden Nash, the definitive Nash anthology. Some of these new poems reveal a darker side of the poet; others are full of fun. But all display the talent of the man whose verse entranced America--and a good part of the world--from the time of the Great Depression until his death in 1971. While earlier collections were organized chronologically, The Best is arranged by subject matter: the subjects of Nash's poems cannot always be identified by his titles, so fans of a particular poem will not have to search for it in vain.