The Russian trip was their last international voyage . They had planned to study the Solar eclipse of August 21 , 1914 , but Russia had entered World War I on August 1 by declaring war on Germany , while the Todds were en route from Kiev to Moscow . In the resulting confusion the astronomers had to abandon their project and their equipment and flee the continent by way of Sweden and Denmark
Solar eclipse of August 21 , 1914
Solar eclipse of August 21, 1914
Mabel Loomis Todd