This is a response to a claim made by Mike Hawkins that there is a large population of dark galaxies. Whenever we look for a lensing galaxy, we find it. This is the first presentation of this work, at a workshop in Oxford; there is also a refereed journal paper on the subject.
The links below point to one file containing the complete text, all figures and tables etc.
As are most of my publications this is available in two forms: