From Cambridge homepage:
Now, for the first time, all of Martens’ Beagle sketches have been made freely available online through Cambridge University Library’s Digital Library:
http://cudl.lib.cam.ac.uk/ and can also be seen in the photo film above. - See more at:
http://www.cam.ac.uk/research/news/hms-beagle-sketchbooks-added-to-cambridge-digital-library#sthash.Kl7y5aMh.dpuf Thought it might be interesting :)