Note: November 1924 to August 1926 Continuation of Practical Electrics (as Vol. 4, No. 1); later merged into Science and Invention. The issues listed here featured a serialized science fiction story, The Ark of the Covenant by Victor MacClure (Thom MacWalter). The serial was the only science fiction story in the publication and 15 installments were published from Vol. 4 No. 1 (November 1924) to Vol. 5 No. 3 (January 1926). Novel reprinted from Harper's hardcover book, 1924. Online source data at http://www.philsp.com/homeville/SFI/t1077.htm#A22643.