830 



SUMMARY OF CURRENT RESEARCHES RELATING TO 



are left open, so that the steam may produce its sterilizing effect in all 

 parts of the apparatus. When tlie sterilizing is completed, the cocks h 

 are closed, and then, after cooling, the germs arc introduced with all 



Fig. 152. 



needful precautions, into A through the side-neck d. As soon as the 

 conidia in A have developed fertile mycelia, the infection of the side- 

 vessels may be effected. 



For this purpose the side-neck d is closed by an india-rubber cap or 

 in some other way, and an india-rubber tube / tixcd to the glass tube B. 

 The cocks b are then opened, the tube B moved by the hand in all direc- 

 tions, and a current of air blown through / and B into the centre vessel 

 A ; and the conidia are thus blown through the connecting-tubes a and 

 c into all the side-vessels C. The side-vessels can then be detached at 

 pleasure. 



Hansen. — La culture pure de la levure. (The pure culture of yoast.) 



Mun. Sciattif., XXIX. (1887) p. 1033. 



Jackson, K. T. — Catching fixed forms of Animal life on transparent media for 



study. Science, XL (1888) No. 275, 3 pp. 



