Con O’Donovan at College of Science, Dublin, probably 1924. Con O’Donovan is in the second row from the bottom, fourth from the left.

Con O'Donovan at College of Science, Dublin, probably 1924. Con O’Donovan is in the second row from the bottom, fourth from the left.

Con O'Donovan at College of Science, Dublin, probably 1924. Con O’Donovan is in the second row from the bottom, fourth from the left.