This sounds very much like the survey I posted a few weeks back.
I had an encouraging reply from Loren Haarsma.
It's at http://www.calvin.edu/archive/evolution/199810/0134.html
Art Chadwick wrote:
> We have discussed various aspects of belief and science before on the
> listserve, but these are the most depressing statistics I have come across.
> For those interested, the entire article can be seen at the address below.
> Nature 394, 313 (1998) © Macmillan Publishers Ltd.
> Leading scientists still reject God
> Our chosen group of "greater" scientists were members
> of the National Academy of Sciences (NAS). Our survey
> found near universal rejection of the transcendent by
> NAS natural scientists. Disbelief in God and immortality
> among NAS biological scientists was 65.2% and 69.0%,
> respectively, and among NAS physical scientists it was
> 79.0% and 76.3%. Most of the rest were agnostics on
> both issues, with few believers. We found the highest
> percentage of belief among NAS mathematicians (14.3%
> in God, 15.0% in immortality). Biological scientists had
> the lowest rate of belief (5.5% in God, 7.1% in
> immortality), with physicists and astronomers slightly
> higher (7.5% in God, 7.5% in immortality). Overall
> comparison figures for the 1914, 1933 and 1998 surveys
> appear in Table 1.