"The claim is ridiculous, easily refuted by a quick check of Ottoman census records."
Peters' critics admit that the Ottoman records undercount the Arab population.
Here's what Porath, a staunch critic of Peters, says about the Ottoman census.
"I never claimed, however, that the 1893 Ottoman census figure of the number of Jews living in Palestine (9,817) is correct; nor do I accept that the Ottoman figure for the Muslims (371,959), also cited by Mrs. Peters from an article by K. Karpat,1 is correct. As all students of Ottoman history know, only after 1909 did the “Young Turks” government begin to draft Christian and Jewish subjects of the Ottoman Empire into the army. Therefore, until that date, it was mainly the Muslims who had good reason not to register their names with the census authorities or, for that matter, with any other official authorities, since registration made them easy prey for the draft officers. The same fear prompted them to avoid the land registers too—with disastrous results for their property rights.
As a result the official Ottoman figure for the Christian population (42,689) looks fairly accurate, whereas the figure for the Muslims is underestimated."