A MANUAL OF BACTERIOLOGY 



should be dipped in dilute alcohol. 'Great care 

 is required in cutting sections by hand, to hold the 

 razor firmly yet lightly, so as to cut them thin and 

 at the same time even, and this cannot be done 

 without a great deal of practice/ The author has, 

 in his possession, sections of the human brain vary- 



B 



FIG. 9. KOCH'S 'STEAM STERILISER. 



ing from the y oV o to the T ^ of an incn in thick- 

 ness which were hand-cut by Dr. E. Palmer, who 

 was formerly the resident physician to the Lincoln 

 County Asylum, Lincoln. To obtain such sections 

 requires skill and practice, therefore it is better to 

 use the microtome. 



