1874.] On Organisms in the Liquor Sanguinis. 391 



before so crowded with these bodies, becomes, as the pustulation advances, 

 entirely free from them. 



8. The concluding section of the paper is occupied with the descrip- 

 tion of the secondary eruption, the anatomical characters of which very 

 closely resemble those which have been already detailed. 



V. " Researches in Spectrum- Analysis in connexion with the 

 Spectrum of the Sun/' No. IV. By J. NORMAN LOCKYER, 

 F.R.S. Received May 11, 1874. 



(Abstract.) 



Maps of the spectra of calcium, barium, and strontium have been con- 

 structed from photographs taken by the method described in a former 

 communication (the third of this series). The maps comprise the portion 

 of the spectrum extending from wave-length 3900 to wave-length 4500, 

 and are laid before the Society as a specimen of the results obtainable by 

 the photographic method, in the hope of securing the cooperation of other 

 observers. The method of mapping is described in detail, and tables of 

 wave-lengths accompany the maps. The wave-lengths assigned to the 

 new lines must be considered only as approximations to the truth. Many 

 of the coincidences between lines in distinct spectra recorded by former 

 observers have been shown, by the photographic method, to be caused by 

 the presence of one substance as an impurity in the other ; but a certain 

 number of coincidences still remain undetermined. The question of the 

 reversal of the new lines in the solar spectrum is reserved till better pho- 

 tographs can be obtained. 



VI. " An Account of certain Organisms occurring in the Liquor 

 Sanguinis." By WILLIAM OSLER, M.D. Communicated by 

 J. BURDON SANDERSON, M.D., F.R.S. Received May 6, 

 1874. 



In many diseased conditions of the body, occasionally also in perfectly 

 healthy individuals and in many of the lower animals, careful investi- 

 gation of the blood proves that, in addition to the usual elements, there 

 exist pale granular masses, which on closer inspection present a corpus- 

 cular appearance (Plate V. fig. 1). There are probably few observers in the 

 habit of examining blood who have not, at some time or other, met with 

 these structures, and have been puzzled for an explanation of their 

 presence and nature. 



YOL. xxii. 2 H 



