Our opening quote contended that Venn diagrams are overrated. Even those who agree must admit that they have a curious allure ...

IN a set of twelve diagrams issued under the above title, the author has supplied a convenience which has been wanted for some time past in the class-teaching of elementary science, thus removing ...

A SERIES of six large diagrams as follows, issued by the Society:—Large White Cabbage Butterfly, Turnip Fly, or Flea (the prospectus writes “Flee”) Beetle, Beet Fly, Wire Worm and Click ...