as Tahitian. While the majority of the population that was taken to work as slaves in the Peruvian mines died of diseases and bad treatment in the 1860s, hundreds of other Islanders who left for Mangareva in the 1870s and 1880s to work as servants or labourers adopted the local form of Tahitian-Pidgin. Fischer argues that this pidgin became the basis for the modern Rapa Nui language when the surviving part of the Rapa Nui immigrants on Mangareva returned to their almost deserted home island. Language notes from 1886 William J. Thomson, paymaster on the USS Mohican, spent twelve days on Rapa Nui from 19 to 30 December 1886. Among the data Thomson collected was the Rapa Nui calendar. Language notes from the twentieth century Father Sebastian Englert, a German missionary living on Easter Island during 1935–1969, published a partial Rapa Nui–Spanish dictionary in his La Tierra de Hotu Matua in 1948, trying to save what was left of the old language. Despite the many typographical mistakes, the dictionary is valuable, because it provides a wealth of examples which all appear drawn from a real corpus, part oral traditions and legends, part actual conversations. Englert recorded vowel length, stress, and glottal stop, but was not always consistent, or perhaps the misprints make it seem so. He indicated vowel length with a circumflex, and stress with an acute accent, but only when it does not occur where expected. The glottal stop is written as an apostrophe, but is often omitted. The velar nasal is sometimes transcribed with a , but sometimes with a Greek eta, , as a graphic approximation of . Rongorongo It is assumed that rongorongo, a possible undeciphered script once used on Rapa Nui, transcribes the old Rapa Nui language if it is indeed a true writing system. Hispanisation The island is under the jurisdiction of Chile since 1888 and is now home to a number of Chilean continentals. The influence of the Spanish language is noticeable in modern Rapa Nui speech. As fewer children learn to speak Rapa Nui at an early age, their superior knowledge of Spanish affects the 'passive knowledge' they have of Rapa Nui. A version of Rapanui interspersed with Spanish nouns, verbs and adjectives has become a popular form of casual speech. The most well integrated borrowings are the Spanish conjunctions (or), (but) and y (and). Spanish words such as problema (problem), which