INTRODUCTION. 



liii 



all trace of the vascular ramifications obliterated, since none can 

 be detected in such dentine V The same question is equally ap- 

 plicable to the nerves of the pulp. In the explanation of this 



New Reports of the * Communication to the British Association,' in August, 1839, were 

 then inserted in the Medical Gazette and Lancet for 1840, with various modifications, to make 

 the Birmingham Memoir of August, 1839, accord with the 'New Theory' af December, 1839. 

 These interpolations may be judged of by the following paragraphs touching the ossification of 

 the pulp : — 



" Schwann regards the den- 

 tal substance as the ossified 

 pulp, whUst Mr. N.'s observa- 

 tions lead him to conclude that 

 the cells of the ivory are alto- 

 gether a distinct formation." 

 — Literary Gazette, Septem- 

 ber, 1840, p. 598. 



" He concluded, therefore, 

 that the ivory is neither more 

 nor less than the ossified pulp, 

 and that it can in nowise be con- 

 sidered as an unorganized body." 

 — Lancet, June, 1840. 



"L'ivoire n'est done pour 

 moi qu'une portion de la 

 pulpe ossifiee." 



Comptes Rendus de I'Aca- 

 demie des Sciences, Octobre 2. 

 1842,^. 680:— 



and by many others which I pointed out in an exposure of Mr. Nasmyth's attempt to 

 appropriate to himself my discovery of the true ' Theory of Dental Development.' 



When the inconsistencies between the reports of Mr. Nasmyth's Papers read before the 

 British Association at Birmingham, in August 1839, as published in the Literary Gazette and 

 Athenaeum of September, 1839, and the Reports of the same Papers communicated by Mr. N. 

 to the Lancet and Medical Gazette of June, 1840, were demonstrated : Mr. Nasmyth replied: — 

 " My answer to this is, that I did not furnish the Report to the Literary Gazette, and that the 

 notice of my Papers which I sent to the Athenaeum, was so abbreviated and cut to pieces that 

 I cannot be responsible for it." — Medical Gazette, June 26th, 1840, p. 545. If this assertion 

 is to be credited, the Report in the Literary Gazette must be regarded, however marvellous the 

 fact, as the work of a bond fide Reporter taking down the communication of an English soi- 

 disant discoverer, and pubUshing it in the form of a literal translation of a German Work : 

 or, that the Reporter mistook a quotation by Mr. Nasmyth from Dr. Schwann's work for the 

 terms in which Mr. N. was narrating his own observations. 



But Mr. Nasmyth, in his Communication to the "Academie des Sciences," Oct. 3, 1842, 

 in reference to Schwann's work, from which a literal translation of the observations on the 

 Teeth is given in the Literary Gazette of Sept. 1831, as a Report of part of Mr. N's Paper read 

 in the preceding month at Birmingham, states :— " Son ouvrage ayant ete publie a I'epoque 



