How rudimentary movements evolve into sophisticated ones during development remains unclear. It is often assumed that the primitive patterns of neural control are suppressed during development, ...

A 400 million-year-old fossil of a coelacanth fin, the first finding of its kind, fills a shrinking evolutionary gap between fins and limbs. University of Chicago scientists describe the finding in a ...

Finger-prints of Twins.-A study of the fingerprints of twins has been made by Prof. H. H. Newman (Jour. Genet., vol. 23, No. 3). The material consisted of the prints of 100 pairs of same-sexed twins, ...