Comparative Physiology and Evolution of Vision in Inverte...
Land, M. F. / Laughlin, S. B. / Waterman, T. H. / Strausfeld, N. J. / Nässel, D. R.![Comparative Physiology and Evolution of Vision in Invertebrates](https://support.digitalhusky.com/media/annotations/sorted/133/13336670/CHSBZCOP0313336670.jpg)
Morphology and physiology are two fields which cannot be separated. This statement needs to be amplified: purely factual results of a morphological or physiological nature only have real value when they are gained in the context of certain guiding, embracing questions. By themselves they are mostly of little value, because only a guiding hypothesis or theory is of any importance. Equally, a physiological question will always raise questions as...