bold = Main text
   Liber, Caput     grey = Comment text

 1     Pre         |        Academica, which was before difficult of access. The present work
 2     Pre         |        with a subject so unusually difficult and so rarely edited I cannot
 3     Int,      IV|        could not read the numerous difficult works on which he has been
 4     Int,      IV|          they were made to take in difficult philosophical discussions.
 5     Int,      IV|           then engaged had made it difficult to comply with the request172.
 6     Not,       1|            form an opinion on this difficult question the student should
 7     Not,       1|          it is absurd. Duos: it is difficult to decide whether this or
 8     Not,       1|          in Plato and Aristotle is difficult to see; that he did so,
 9     Not,       1|            allow me to pursue this difficult subject farther. For the
10     Not,       1|        space (alicubi), it is more difficult to see why it should be
11     Not,       2|      Contra. Ac. II. 29.~36. It is difficult to see where this passage
12     Not,       2|            by Cic. in Book II. are difficult to fix, as they apply equally
13     Not,       2|       which he substituted is more difficult to comprehend. Sextus indeed
14     Not,       2|           regard to (3), it it not difficult to see wherein Philo's "
15     Not,       2|             nihil sit omnino: this difficult passage can only be properly
16     Not,       2|           deus aliqui in 19. It is difficult to distinguish between aliquis
17     Not,       2|      contradict his rule. It is as difficult to define the uses of the
18     Not,       2|        words. Eodem caelo atque: a difficult passage. MSS. have aqua,
19     Not,       2|           es. When we consider how difficult it was for copyists not
20     Not,       2|        Liniamentum ... carentem: a difficult passage. Note (1) that the
21     Not,       2| Morgenstern, for what reason it is difficult to see.~§127. Pabulum: similar