58 



Mr. K. W. Monsarrat. Observations on tltc 



0' C, which is a number very close to that usually given in tables of 

 electrical specific resistance."^ 



Matthiessen and Yogt state in this paper, that they hope to be able 

 to prepare pure nickel electrolytically, and obtain a value for its 

 electrical resistivity. I have been unable to discover, however, that 

 they ever carried out their intention. At am^ rate, the number which 

 they give for the electrical volume resisti^^ity of this nickel of the 

 purity of which they e^ddently had suspicions, has been accepted for 

 the last thirty-six years as the true value. 



" Observations on the Morphology of the Blastomycetes found in 

 Carcinomata." By Keith W. Monsakeat, M.B., F.E.C.S.E. 

 Communicated by Professor Sheeeingtox, F.E.S. Eeceived 

 IS^ovember 22,— Eead December 14, 1899. 



(From the Pathological Laboratory of University College, Liverpool.) 

 (Abstract.) 



This research was undertaken in order to confirm if possil)le the 

 observations of Sanfelice, Eoncali, and others, on the presence of 

 organisms of the order Blastomycetes in carcinomata, and to study the 

 morphology of the same. The observations have been arranged 

 under four headings : — 



1. Isolation hy culture. 



2. Staining reactions. 



3. Histology. 



4. Tissue reactions following inoculation. 



1. Isolation Ijy Culture. — The tumours examined were carcinomata of 

 the breast and uterus ; incisions were made with a sterilised knife and 

 scrapings from the edges of these inseminated on to media. Many 

 kinds of media were tried, but a result was obtained only on glucose 

 agar. Wort agar and wort bouillon were subsequently used for sub- 

 cultures ; on both the organism grows readily aerobically at 37° C. 

 Sub-cultures on neutral gelatine appear as pale yellow slow-growing 

 colonies without liquefaction of the mediimi. On neutral agar the 

 colonies have a more marked yellow tinge ; they do not appear until 



* The numerical values of the specific resistance of nickel given in various tables 

 by different authors are not quite identical, and yet all so far found are stated to 

 be derived from Matthiessen's experiments. Thus, Everett (' C.Gr.S. System of 

 Units,' 1891 ed.) gives 12,320 C.G-.S. imits at (f C. as the value. Landolt and 

 Bornstein give one value equivalent to 12,757 at 0° C. from the ratio of conduc- 

 tivity of nickel to that of mercury, and another equivalent to 12,014 at 0° C, 

 derived from the ratio of the conductivities of hard drawn silver to that of nickel. 



