[Article] Sap bewitched Adjust Share By W. Hamilton (William Hamilton) Gibson, This article is only available as a PDF to subscribers. Download PDF Tags Gallflies Galls (Botany) Host-parasite relationships United States More from W. Hamilton (William Hamilton) Gibson The milkweed A few native orchids and their insect sponsors The cuckoos and the outwitted cowbird Adjust Share Close < Previous Issue | View All Issues | Next Issue > May 1886 < Previous Issue | View All Issues | Next Issue > Table of Contents Close