(58) Aristotle, who was cited by Tredern in the French 

 translation of Kamyus (1783) said: "umbilical cord, united 

 with the yolk, is attached to the small intestine" (223) . 



(59) For example, J. B. Leveille (Dissertation physio- 

 logique sur la nutrition des foetus etc., J. de Physique, 

 1999) could not make certain that the chord, supporting the 

 yolk, was a flap (223) . 



(60) Blumenbakh in his "Comparative anatomy" related 

 the beginning of the existence of intestines to the 4th day. 

 Vesling saw the intestines on the 5th day, and Stenonus saw 

 them on the 7th day. According to Vicqd'Azyr, the intestines 

 appear after 90 hours of incubation; this is the earliest 

 period, but usually after 120 hours. Tredern noted that the 

 latter data corresponded to his own observations. (223) 



(61) In this connection Tredern said in the commentary 

 on the literature reference to Wolff: "On the 3rd day, both 

 plate and mesentery are present, from which the formation of 

 the middle intestines takes place" (Die III adsunt ambae 

 lamellae atque mesenterium, ex quo formatio intestini medii 

 progreditur) . (224) 



(62) Malpighi, and equally Koiter also wrote that on 

 the 10th day the intestine hangs down from the abdominal 

 cavity. Harvey said, that on the 14th day the intestine and 

 the stomach are still not included in the abdominal cavity; 

 the stomach is rarely present outside it. Tredern added that 

 seeing something similar, he considered this phenomenon as 



a deviation from norm (224) . 



(63) Malpighi mentioned the rudiments of the wings 

 already at the stage of 24 hours of incubation. Haller 

 fairly pointed to the erroneousness of this confirmation. 

 According to Stenonus, on the 5th day the upper part of the 

 thigh as well as the feet and wings are formed. According 

 to Vesling, the rudiments of legs appear on the 4th day 

 while according to Harvey on the 5th day. Maitre-Jean, 

 Vicq d'Azyr as well as Haller mentioned much earlier periods 

 of appearance of extremity rudiments (after 60-70 hours of 

 incubation) (224) . 



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