Martha Daniels's work riffs off the history of ceramics, combining Mediterranean and Asian influences in the same way as her mentor, Betty Woodman. The most remarkable creations in the show at William Havu Gallery were her delicate -- though gigantic -- towers that subtly referred to work by the great Brancusi. Among Daniels's strengths are her expressive handling of the forms and the way she uses glazes as though they were paints. Long one of the best ceramicists in the time zone, Daniels is a city treasure.