and especially his a priori natural philosophical ideas 

 about the beginning rounded form inherited by all the bodies 

 of nature. 32 



Concerning the structure of the blood-carrying vessels 

 of the blastoderm, described by Pander, Oken again stated 

 that they must be looked at as "two cords, whose arteries 

 and veins are connected with each other. Next Oken says 

 that the neighboring vessel is nothing other than the 

 uterus. Aside from these natural philosophical fantasies, 

 Oken suggested a reasonable idea, that the yolk of the chick 

 embryo corresponds to the umbilical sac of the mammalian 

 embryo. Talking about the embryonic vessels he expressed 

 his wish to see a schematic drawing illustrating the 

 connection of the umbilical vessels with the body vessels. 



Below (p. 1539), Oken again returned to the question 

 about the development of the intestine, confirming with 

 certainty that he himself had investigated this process 

 and did not understand Wolff's and Pander's descriptions. 

 Having only the drawings for the yet unpublished German 

 text, which were sent to him ahead of time to consider, 

 Oken commented that the "engravings were accomplished so 

 clearly that the figures, it seems, can be judged from the 

 papers" (pp. 1539 - 1540). 



Oken's review ends with praise for Pander's unselfish 

 services to science and with Oken's wishes for productive 

 and continuing efforts for the popularization of scientific 

 progress. "We heard," he wrote, 



that Pander is going to issue a German edition, 

 not for sale but to offer the nature investigators. 

 This, in any case, is an incomparable offer. It 

 is impossible to neglect the need to serve science, 

 so that such sacrifice, with and without the 

 monstrous expenses which Pander has invested on 

 his own, should be highly appreciated. We can, 

 however, advise printing copies for sale also. 

 There are many friends of science whom Pander may 

 not know and who undoubtedly desire to acquire such 

 work. (p. 1540) 



32. More details about that in Chapter 10. 



263 



