Foucault pendulum
Caspar Garthe repeated the experiment at Cologne Cathedral, Friedrich Magnus Schwerd did in Speyer Cathedral. Their results were deceptive, and not nearly as good as those obtained in Paris. In 1879, Heike Kamerlingh Onnes wrote his thesis on the subject, doing extra calculations on the exact magnitude of the effect. In his thesis, he  also pointing out the problems the people had encountered in Cologne and Speyer.