262 Presents [Jan. 24 r 



cerned, give no evidence of anything different from what obtains in 

 Monotropa uniflora and Gorallorliiza multiflora phanerogamous plants 

 destitute of chlorophyll. 



Some of the more important facts ascertained in the investigation 

 may be thus briefly stated : 



1. Iron, firmly combined, is a constant constituent of animal and 

 vegetable chromatin. Another compound, less rich in iron, is found 

 in nucleoli. 



2. The chromophilous substance in ferment-forming cells contains 

 iron, and the cytoplasm of Protozoan organisms, which also probably 

 secretes ferments, yields evidence, of the presence of a firmly combined 

 iron compound. 



3. A firm compound of iron is present in the chromophilous sub- 

 stance of the cytoplasm of Fungi. 



4. Of the non-nucleated organisms, Bacteria, owing to their 

 minuteness, have, with one exception, given little evidence of the 

 presence of an organic iron compound ; but in the CyanophyceaD the 

 chromophilous portions of the " central substance " contain iron, and 

 iron may be also demonstrated in the peripheral granules formed of 

 the so-called cyanophycin (Palla). 



IV. " Micro-metallography of Iron. Part I." By THOMAS 

 ANDREWS, F.R.S. Received December 15, 1894. 



[Publication deferred.] 



Presents, January 24, 1895. 

 Transactions. 



Bergen : Museum. Aarbog. 1893. 8vo. Bergen 1894 ; On the- 

 Development and Structure of the Whale. Part 1. By G. 

 Guldberg and F. JSTansen. 4to. Bergen 1894. 



The Museum. 



Berlin : Gesellschaft fur Erdkunde. Verhandlungen. Bd. XXI. 



No. 10. 8vo. Berlin 1894. The Society. 



Christiania: Videnskabs Selskab. Forhandlinger. 1893. 8vo. 



Christiania. The Society. 



Dublin : Royal Irish Academy. Proceedings. Third Series. 



Vol. III. No. 3. 8vo. Dublin 1894. The Academy. 



Hermannstadt : Siebenbiirgischer Verein fur Naturwissenschaften. 



Verhandlungen und Mittheilungen. Jahrg. XLII. 8vo. 



Hermannstadt 1892. The Society. 



Johannesburg: South African Association of Engineers and 



Architects. Proceedings. 1892-94. 8vo. London. 



The Association, 



