Malthus, T. R. (1804). Of the checks to population in France (continued). In T. R. Malthus, An essay on the principle of population, or A view of its past and present effects on human happiness, with an inquiry into our prospects respecting the future removal or mitigation of the evils which it occasions (pp. 211-219). London, England: Ward, Lock & Co.
http://dx.doi.org/10.1037/12257-021
I have not thought it advisable to alter the conjectural calculations and suppositions of the preceding chapter, on account of the returns of the prefects for the year IX., as well as some returns published since by the government in 1813, having given a smaller proportion of births than I had thought probable; first, because these returns do not contain the early years of the revolution, when the encouragement to marriage and the proportion of births might be expected to be the greatest; and secondly, because they still seem fully to establish the main fact, which it was the object of the chapter to account for, namely, the undiminished population of France, notwithstanding the losses sustained during the revolution; although it may have been effected rather by a decreased proportion of deaths than an increased proportion of births. (PsycINFO Database Record (c) 2016 APA, all rights reserved)