Neolithic hunters, including the members of the Cucuteni-Trypillian culture of Romania and Ukraine (c. 5500–2750 BC), used traps to capture their prey. An early mention in written form is a passage from the self-titled book by Taoist philosopher Zhuangzi describes Chinese methods used for trapping animals during the 4th century BC. The Zhuangzi reads, "The sleek-furred fox and the elegantly spotted leopard ... can't seem to escape the disaster of nets and traps." "Modern" steel jaw-traps were first described in western sources as early as the late 16th century. The first mention comes from Leonard Mascall's book on animal trapping. It reads, "a griping trappe made all of yrne, the lowest barre, and the ring or hoope with two clickets." The mousetrap, with a strong spring device mounted on a wooden base, was first patented by William C. Hooker of Abingdon, Illinois, in 1894.