Kathleen Schlesinger, 1911 Encyclopædia Britannica, Volume 6… (1911)
“ Gerbert gives illustrations of the fanciful chorus from the Dardanus letter and of two other instruments of later date; one of these represents a musician playing the Platerspiel, the other the bagpipe known as chevrette, in which the whole skin of the animal (a kid or pig) , with head and feet, has been used for the bag. Edward Buhle, [3] in his admirable work on the musical instruments in the illuminated MSS. of the middle ages, points out that Gerbert, [4] who gives the dates of his two MSS. as “6th and 9th centuries,” has a singular method of reckoning the date of a MS. ”
