ᴀɴ ᴀғʀɪᴄᴀɴ ᴘʏɢᴍʏ ғᴀʟᴄᴏɴ ʙʏ ʀᴀᴄʜᴇʟʟᴇ sᴍɪᴛʜ ᴘʜ.ᴅ.