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Show 164 MR. G. F. BENNETT ON ORNITHORHYNCHUS. fMai*. 6, the burrow for another 4 feet, I came to another chamber on the right-hand side, which was 9 inches wide, 15 long, and 5 inches high ; the burrow still continued for 2 feet more, when the final chamber was reached. This had an entrance about 10 inches wide; the chamber measured 17 inches long, 10 inches wide, and 6 inches high ; but there was no sign of any nest in it, nor any thing to indicate that it had been inhabited for that purpose at any time, although the surface of tbe top appeared to be smooth and hard, as if the animal i-sketch of burrow of Ornithorhynchus, laid open November 19th. had been rubbing upon it. I then found and opened another burrow, which showed indications of being inhabited. The size of the entrance was 2| to 4 inches, and ran very circuitously. I then excavated this burrow to about 20 feet (having passed a small unfinished chamber on the left about 4 feet from the entrance, which is shown in the sketch fig. 2; at every foot the burrow was rising up the bank), when I came upon a chamber on the right-hand side measuring 8 inches high, 10 inches wide, and 16 inches long. I then du- on for about 2 feet more, when I came upon another chamber on the ri-ht- |