De morborum temporibus, Principum Medicorum Aphorismoi

8. Whether the heart has small nerves in the right ventricle. 3 Hist. Animal. 5 & 1 c 17.

9. Whether there are eight common ribs of the inferior and superior part. 1 Hist. Animal. 15.

10. Whether winged creatures, since they lack a diaphragm, breathe.
11. Whether the cause of expiration is solely the subsidence of the muscles, or also the contraction of the strained mediastinum. 2 De Mot. Musc.

12. Whether no artery pertains to the liver and the spleen. 3 Hist. Animal. 4.

13. Whether two ducts are derived from the kidneys into the heads of the testicles. 3 Hist. Animal. 1.

14. Whether two arteries led to the testicles are bloodless: and two other ducts from the kidneys to the testicles are bloody. 3 Hist. Animal. 1.

15. Whether no vein comes to the vulva, but many arteries do. 3 Hist. Animal. 4.

16. Whether sexes differ from one another only in the uterus, as far as interior parts are concerned. 1 Hist. 19.

17. Whether only those with teeth on both sides have a straight intestine. 2 Hist. Animal. 17.

18. Whether in viviparous animals, except the elephant, the hocks are contracted into a hollow, unlike in humans. De Communi Animal. Gressu 11 & 2 Hist. Animal. c 1.

19. Whether humans lack a heel bone. 2 Hist. Animal. 1 & 4 Part. Animal. 10.

Optics.

1. Whether, as in the case of Antipheron and in algebraic and astronomical calculations, if you suppose a falsehood: so in the theorems of all optics, it makes no difference whether you establish that vision occurs by reception or by emission. 3 Meteor. 4, Pisanus, Eucl.

2. Whether vision always occurs through a radial pyramid.
3. Whether a thing always appears smaller under a smaller angle. 3 Meteor. 4.

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