The Da Vinci Notebooks at sacred-texts.com
Notes on the Last Supper (665-668).One who was drinking and has left the glass in its position and turned his head towards the speaker.
Another, twisting the fingers of his hands together turns with stern brows to his companion . Another with his hands spread open shows the palms, and shrugs his shoulders up his ears making a mouth of astonishment .
 Another speaks into his neighbour's ear and he, as he listens to him, turns towards him to lend an ear , while he holds a knife in one hand, and in the other the loaf half cut through by the knife.  Another who has turned, holding a knife in his hand, upsets with his hand a glass on the table .
347:301 665, 666: In the original MS. there is no sketch to accompany these passages, and if we compare them with those drawings made by Leonardo in preparation for the composition of the picture--Pl. XLV, XLVI--, (compare also Pl. LII, 1 and the drawings on p. 297) it is impossible to recognise in them a faithful interpretation of the whole of this text; but, if we compare these passages with the finished picture (see p. 334) we shall see that in many places they coincide. For instance, compare No. 665, 1. 6--8, with the fourth figure on the right hand of Christ. The various actions described in lines 9--10, 13--14 are to be seen in the group of Peter, John and Judas; in the finished picture however it is not a glass but a salt cellar that Judas is upsetting.