2026-10-06 rusneb.ru (Национальная электронная библиотека, the Russian National Electronic Library)

URL tried: https://rusneb.ru/search/?q=Попытка+химического+понимания+мирового+эфира Result: blocked. The site showed "Отключите VPN, чтобы продолжить" (switch off your VPN to continue), a geo/VPN block page, not a CAPTCHA. Nothing was clicked. The Google snippet showed that rusneb holds the 1905 Frolova edition as a downloadable PDF (10 MB). The same edition was obtained instead from ether-wind.narod.ru. rusneb may also hold the 1903 «Вестник и Библиотека Самообразования» issues Nos. 1-4 and the 1906 8th edition of Основы химии. Recheck if access changes. Related: the NSU electronic library (e-lib.nsu.ru) lists a 1910 Frolova printing of the essay (Google snippet only, not opened).