424 The Loom of Language Between the beginning of the ninth and the end of the fifteenth century A D , Europe assimilated the technique of Muslim civilization, as Japan assimilated the technique of Western civilization during the latter half of the nineteenth century Scholars of Northern Europe had to acquire a knowledge of Arabic as well as of Latin at a time when Moorish Spam was the flower of European culture, a thriving centre of world trade, and the sole custodian of all the mechanics, medicine, astronomy,and mathematics in the ancient world While Arabic scholars of the chief centres of Muslim culture, such as Damascus, Cairo, Cordova, and Palermo refused to deviate from the classical Aiabic of pre-Islamitic poetry and the Koran, the speech of the common people evolved further and split into the several vernaculars of Syria, Tripoli, Iraq, Algeria, Tunis, Egypt, and Morocco Their common charac- teristics are a reduction of vowels, the decay of the flexional system, and heavy admixture of non-Arabic words To-day Arabic is spoken by about forty million people About the fourth century A D , Ethiopia responded to the efforts of Coptic missionaries, and embraced the Christian faith Thereafter Abyssinian Semitic, known as Ge'ez or Ethiopia became a medium of literary activity It died our as a spoken language in the fourteenth century, but like Sanskrit, Latin, and classical Arabic, continued to function as a medium of religious practice, and as such is still the liturgical language of the Abyssinian Church Its living descendants are Amhanc, Tignna of Northern Abyssinia and Tzgre of Italian Entrea Maltese, which is of Arabic origin., is the language of a Christian community. It is transcribed in the Latin alphabet The reader of The Loom of Language will now be familiar with two outstanding peculiarities of the Semitic group One is called tnhter- ahsm (p 70) The other is the prevalence of internal vowel change When relieved of affixes and internal vowels the majority of root words have a core of three consonants. Within this fixed framework great variety is possible by ringing the changes on different vowel combinations. With only five simple vowels it is possible to make twenty-five different vocables of the pattern b-g-n, in the English tnhteral grouping, legin-began-begun It is scarcely an exaggeration to say that a Semitic language exhausts most of the conceivable possibilities of internal vowel change consistent with an inflexible triple-consonant frame A distinct arrangement of three particular consonants has its charac- teristic element of meaning Thus in Arabic, qatala means "he killed," quttla means "he was killed," qatil means "murderer," and qttl means