38 THE MICHOSCOPE Marcli 



Any lady interested in science and wishing to obtain 

 further information concering this club can do so by ad- 

 dressing the secretary, Mrs. Laura 0, Talbott, 927 P. st., 

 Washington, D. C. 



The paper on the Fermentation in Bread by Miss K. 

 E. Golden was published in the February number of 

 this journal and the illustration on the preceding page 

 should have accompanied it. 



Figs. 1 — 4 are S. cerevisise in its different stages. Fig. 

 1 shows the nucleus ; fig. 2, ascospore ; fig. 5. S. pastor- 

 ianus. 



Immunity from Cholera and Other Infectious Diseases. 



M. J. EOSENAU, M. D. 

 SAN FRANCISCO, CAL. 



[Report of an Address before the Sau Francisco Microscopical Society.] 

 A quarantine station has recently been established by 

 the U. S. Marine Hospital service on Angel Island in San 

 Francisco harbor. The immediate cause of the establish- 

 ment of this station was the cholera scare in Honolulu a 

 few weeks ago, although the necessity for it is liable to 

 arise at any time, exposed as we are to the importation 

 of epidemic and infectious diseases from Central and South 

 American, Chinese, Japanese or Pacific island ports. 



Five years ago, when I was at the Hygienic Institute, 

 Berlin, the whole subject was exhausted in a talk of half 

 an hour. Now the literature is very voluminous, and in- 

 vestigations are being made by specialists in every civil- 

 ized country. Some of the lower animals are completely 

 immune to certain diseases peculiar to man, while cer- 

 tain other animals are extremely susceptible to the toxins 

 when injected into the system. Thus the germs of cholera 

 and tyi)hoid fever have no effect on the lower animals, 

 while guinea pigs and some other animals may be 



