ZOOLOGY AND BOTANY, MICROSCOPY, KTC. 



553 



(6) Miscellaneous. 



Improved Form of Graduated Pipette.* — C. Permin has devised 

 a form of pipette for bacteriological purposes, which possesses the ad- 

 vantage that its use does not involve those departures from hygienic 



Fig. 68. 



principles which are associated with the ordinary pattern. The pecu- 

 liarities of construction and method of use are clearly illustrated in 

 fig. 68. A side opening near the top end communicates with a chaniher, 

 walled with a rubber collar. When the top-end of the pipette is closed 



* Centralbl. Bakt., lte Abt. Orig., lvii. (1911) pp. 575-6. 



