| Description | Consists of:
<li>Letter from Dr Urquhart (James Murray's Royal Asylum Perth) to D Heron, dated 17 Jul 1908, concerning brain weights.</li>
<li>Letter from William Bulloch, dated 12 Oct 1908, to Karl Pearson about references for his research into inheritance of human diseases (notes attached).</li>
<li>3 pedigree analysis charts for genetic disorders.</li> |