Note 218 — Chapter XXI · Fundamental Laws of Socialistic Society.
Meta Stern Lilienthal translation
As early as 1864, Augustin Mouchot made an attempt to make the heat of the sun serve industrial purposes directly and constructed a sun-machine that was improved by Pifré. The largest sun-machine (heliomotor) is in California and serves as an apparatus for pumping. The water in the well is pumped up at the rate of 11,000 litres a minute.