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ADVERTISEMENT. 
On returning from the late Expedition to the Polar Seas, I much regretted to find 
that the account of the Natural Productions collected on the former voyage had not 
yet been completed. Of the cause of the delay I need not here speak, as it has, 
in some measure, been explained in the course of the following pages. It is only 
necessary for me, therefore, to repeat my acknowledgments to the respective Writers 
of the following Notices, for the trouble they have kindly taken in drawing them up. 
W, E. PARRY. 
London, December, 18S3. 
