The Botanical Gardens--Contributions from all Countries--The Zoological Gardens of Adelaide--The Laughing Jackass--The Dingo--A Misnamed Province--Telegraphing from Melbourne to San Francisco--A Mania for Holidays--The Temperature--The Death Rate--Celebration of the Reading of the Proclamation of 1836--Some old Settlers at the Commemoration--Their Staying Powers--The Intelligence of the Aboriginal -- The Antiquity of the Boomerang.