BAIRD & TXTLOCK (LONDON) LTD. 



1615' Reichert's Microtome as above, with Naples object-holder instead of the ordinary holder, 

 fitted with ball and socket joint 



750 



1616 r Jung's Knife, fitted in case 



12 cm. 

 10/- 



1617' Thoma's Knives in case. 



12 cm 



14 cm. 



14 cm. 

 14/6 



16 cm. 

 12/9 each. 



HIT. 



1618 



CO., Freezing Microtome (A. Becker's), as used by Prof. Aschoff. 

 used in conjunction with a C0 2 cylinder. (See page jiy for prices). 



The microtome is 



In this Microtome the knife is supported by a radial arm, pivoted between two centres, and made to describe an 

 arc of a circle. The object rises automatically by means of a micrometer screw, provided with a toothed wheel, 

 which advances at intervals of one to ten teeth. 



Any paraffin cutting knife having a length of not less than 6 cm. may be employed. It is important to note 

 that the knife may be shifted laterally and that, accordingly, it can be utilized throughout the greater part of its 

 blade. The clamp can be turned about a vertical axis. Obviously, the preparation must be so adjusted that the 

 line of its greatest resistance is at right angles to the cutting edge. The object block is roughly adjusted with 

 respect to the knife-edge by lifting or depressing the clamp in its sleeve, whilst the fine adjustment is effected bv 

 turning the micrometer screw one way or the other by means of the crank fitted to the lower end of the screw. 

 Before this can be done the knife-carrier should be swung right forward, otherwise the screw can only be moved 

 upwards, but not downwards. The pointer should in this case be turned into its leftmost position. 



14- -CROSS STREET HATTOI GARDE1ST, E-C 



316 



