Got a link?

It's in his explanation of NRx piece. To quote from there ("biological hypothesis" is the one which says biology strongly affects IQ):

I don’t want to dwell on the biological hypothesis too much, because it sort of creeps me out even in a “let me clearly explain a hypothesis I disagree with” way. I will mention that it leaves a lot unexplained ... For a sympathetic and extraordinarily impressive defense of the biological hypothesis I recommend this unpublished (and unpublishable) review article. I will add that I am extremely interested in comprehensive takedowns of that article (preferably a full fisking) and that if you have any counterevidence to it at all you should post it in the comments and I will be eternally grateful.

Getting to The Bell Curve,

Whose reliability is pretty controversial.

Since we're quoting Yvain, let's continue:

Meanwhile, The Bell Curve was lambasted in the popular press and by many academics. But it also got fifty of the top researchers in its field to sign a consensus statement saying it was pretty much right about everything and the people attacking it were biased and confused. Three years later, they re-issued their statement saying nothing had changed and more recent findings had only confirmed their opinion. The American Psychological Association launched a task force to settle the issue which stopped short of complete agreement but which given the circumstances was pretty darned supportive. There are certainly a lot of smart people with very strong negative opinions, but each one is still usually met by an equally ardent and credentialed proponent.

As to

Alas, I have none and must make do with hands.

I recommend acquiring some. They are highly useful :-)