From the 1st page of the Google file:-
"This is a digital copy of a book that was preserved for generations on library shelves before it was carefully scanned by Google as part of a project to make the world’s books discoverable online."

The pictures of the magazine on this web page have been taken from the digital copy that Google scanned from the Gentleman's Magazine owned by The University of Michigan.

Below are the pages where the text of the two voyages by Midshipman Conant begin.

The magazine also printed the pictures that Midshipman Conant provided. In the journal they are watercolours, whilst in the magazine they are black and white copies.