173 



H 





-r- - 



"& 



c=a=^ 



[M] 



M 



Fig. 50. Fixed pipette. 

 From Linderstr0ni-Lang and Holler (1931) 



Fig. 52. Capillary pipette and syringe 

 control. From Sisco, Cunningham, and 

 Kirk (1941) 



n 



Fig. 51. Hand pipette. 

 From Linderstr0m-Lang 

 and Holler (1933a) 



-o- 



-n 



=TJ 



<] 



Fig. 53. Constriction pipette: 



(A) proper form; (B) faulty form. 



From Linderslr0m-Lang and Holler (1940) 



} 



^^ 



Fig. 54. Constriction pipette 



with water jacket. 

 From Holler and Doyle (1938) 



