Four male and fifteen female students in biology class, some looking in microscopes while others are writing in notebooks. In the center of the room are piles of animal bones piled on tables and large trunks. Along one wall are four windows with shades and a shelf between each window. An instructor stands in front of a chalkboard along the back wall. Hanging from the tin ceiling are single bulb hanging light fixtures. Biology classes were held on the third floor of Science Hall from 1902 until 1922.https://commons.und.edu/archive-photos/1060/thumbnail.jp