MEMOIR OF LAMARCK. 47 
So convinced was Lamarck of the accuracy and 
value of his theory, that he resolved on reducing it 
to practice, and thus at the same time establish its 
truth, and attract the attention of the public towards 
it. For this purpose he drew up a scries of alma- 
nacks, which he had the perseverance to publish for 
ten consecutive years, the nature of which will be 
best understood from the title of that which first 
appeared. “ Annual Meteorology for the Year vm 
of the Republic (1800, A. d.), containing an Exposi- 
tion of the Probabilities acquired by a long Series of 
Observations on the State of the Weather, and 
Variations of the Atmosphere, in different Seasons 
of the Year; an Indication of the Times when it 
may be expected to be fine AVeather, or Rain. 
Storms and Tempests, Frosts, &c. : finally, an Enu- 
meration, according to Probabilities, of the Times 
favourable for Fetes, Journeys, Voyages, Harvest, 
and other Undertakings, in which it is of Import- 
ance not to be interrupted by the Weather; with 
simple and concise Directions regarding these new 
Measures.” His predictions, as might have been 
expected, proved more frequently erroneous than 
otherwise, but this circumstance was far from in- 
ducing him to discontinue his exertions. Every 
year he had recourse to some new consideration, — 
such as the phases, the apogee and perigee of the 
moon, and the relative position of the sun, to 
account for his previous failure, and afford greater 
certainty in his future prognostications. After every 
expedient had been tried without success, he was 
