ALG^. 165 



mersed In a malarial atmosphere, and where every- 

 one was more or less affected with symptoms of 

 miasmatic poisoning. 



The first salivary secretions and mucous expectora- 

 tions of the morning were those used. In these 

 secretions, amongst other organisms, he found as the 

 only constant bodies, uniformly in all cases, and 

 usually in great abundance, minute oblong cells, 

 either single or aggregated, consisting of a single 

 nucleus, surrounded by a smooth cell wall, with a 

 highly clear, apparently empty, space between the 

 outer cell wall and the nucleus. Their peculiar ap- 

 pearance satisfied him at the outset that they were 

 not fungoid, but cells of an algal type, resembling 

 strongly those of the Palmellse. 



After satisfying himself that these minute cells 

 were the only forms found that could be relied upon 

 as constantly present on malarial levels, and not 

 present above them, his next step was to trace their 

 source, if possible, and their character. The details 

 need not be entered upon, but suffice it to say that 

 rectangular plates of glass were suspended about one 

 foot above the surface of stagnant pools and marshy 

 grounds that were partially submerged. On both 

 surfaces of the plates the oblong cells were found in 

 considerable numbers, and these experiments were 

 repeated for many nights, In varying localities, with 

 the same results. 



Incidentally it is remarked that, In walking over 

 the swampy grounds in order to suspend the plates, 

 the doctor noticed a peculiar dry feverish sensation 

 always produced in the throat and fauces, extending 



