  I review published data relating to the growth of ice crystals from water
vapor under various conditions, and I critically examine the different
measurements to determine what useful information can be extracted from each. I
show that most, and possibly all, of the existing growth data have been
seriously distorted by systematic errors of one form or another, to varying
degrees. Many data sets are dominated by systematic effects, so that the
conclusions drawn from them are unreliable. I list and describe these
systematic errors in some detail so that they may be avoided in future
experiments. I then cautiously draw conclusions from the growth data and
compare with theories pertaining to our current understanding of the crystal
growth dynamics of ice.
