One of the characteristic properties of molecules assembled in masses is their attraction for one another. While it is customary to classify these attractions under two heads, cohesion and adhesion, it is well understood that there is in reality only one form of attraction.
©1929 by Iowa State Teachers College
Science Bulletin: Vol. 1:
6, Article 8.
Available at: https://scholarworks.uni.edu/science_bulletin/vol1/iss6/8