How did Aboriginal audiences experience popular science when it unfolded on stage in a mission site? This chapter considers phrenological visits to Yorta Yorta country in south-eastern Australia, and particularly the lectures of JB Thomas at Maloga Mission in 1884 and John Joseph Sheridan at nearby Cummeragunja in 1892. Like other scientists and medical men who visited here, these men perpetuated scientific racism. But newspaper reports also point to the possibility of these lectures – which also included lantern slides – as moments of nuanced interaction from which Yorta Yorta and other Aboriginal residents derived value and pleasure, rather than as straightforward impositions. As participatory entertainments, such shows hinged on uncertain moments with mixed emotions on both sides. This chapter considers the possible ways that, within the local context, phrenology and rational amusement might have become items for perusal and collection by Aboriginal people negotiating two-way living in a changing world.