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XLIII. Professor Th. Bischoff's Reply to Dr. Martin 

 Barry's "Remarks" on his " Entvoickelungsgeschichte des 

 Kaninchen- Eies" 

 TN the London, Edinburgh and Dublin Philosophical Maga- 

 X zine (Jan. 1844., No. 156, p. 42) Dr. Martin Barry has 

 published " Remarks " on my work on the Development of 

 the Ovum of the Rabbit, which appeared in 1842. As in this 

 work I was compelled to differ in many instances from Dr. 

 Barry's statements on the subject and to point out many errors 

 and misconceptions into which he had fallen, I was prepared 

 to expect something from him in reply, but certainly not such 

 as he has just published. I treated Dr. Barry throughout 

 with scientific courtesy ; I always gave, as completely as pos- 

 sible, reasons for my dissent from him ; and if I maintained 

 the opinion that, whilst it cannot be denied that he is entitled 

 to praise as a conscientious and scrupulous observer, there is 

 nevertheless in his observations a want of due perspicuity and 

 calmness of reflection, a confounding of the essential with the 

 unessential, and a fantastical overstraining or exaggeration, 

 I also gave reasons for it. Dr. Barry, on the contrary, has 

 in his " Remarks " adopted a different line of conduct towards 

 me. He has thrown out the unworthy imputation, that I have 

 made use of his labours without acknowledgement ; he alleges 

 that my figures are poor imitations of his ; that my method of 

 investigating the ova in the Fallopian tubes is almost the same 

 as his; that I have in many places turned his results to my 

 own use without naming him ; and concludes his remarks with 

 a very offensive and injurious statement in reference to this. 



Here, in Germany, it is not necessary for me to repel Dr. 

 Barry's imputations. Hundreds of persons know that I was 

 engaged with researches on the development of the ova of the 

 Mammifera many years before Dr. Barry, and know and knew 

 also the results of these researches, from the lectures which I 

 have given every year on the subject. Moreover, Dr. Barry 

 has, by his continued fantastical papers on the " Blood-cor- 

 puscles " and on " Fibre " — objects fortunately more attainable 

 for observation than the ova of mammifera, — rendered his 

 credit too questionable for me to fear anything from him in 

 reference to the success and appreciation of my work. Dr. 

 Barry took care to make quickly known to the British public, 

 in the Philosophical Magazine, a somewhat over-hasty admis- 

 sion of his allegations on the part of Prof. Valentin of Bern, 

 but he does not appear to have shown the same alacrity now 

 in communicating the more recent opinion of Prof. Valentin 

 and the mode of reception of his researches by R. Wagner, 

 Gluge, Kblliker and others. But in England, where all this 



