ADVERTISEMENTS. 
Cambrifojt Instrument 
Campang, limits* 
— 
NEW ROCKINQ MICROTOME. 
1900 PATTERN. 
[PATENTED.] 
This Instrument possesses the following great improvements over the 
old types of instruments 
1. Increased rigidity. 
2. The impossibility of cutting thin and thick sections. 
3. The impossibility of tearing sections on the upward movement of 
the object. 
4. A graduated arc for showing the thickness of the sections. 
5. Catch for holding the object above the edge of the razor. 
6. Improved method of fixing the cord. 
7. A new object*holder. 
Price, including Object-holder, £5. 
Write for Pamphlet descriptive of the above Instrument , Graham Kerr's 
Mounting Apparatus , &^c t 
CATALOGUE OF BOTANICAL AND PHYSIOLOGICAL APPARATUS SENT POST FREE ON APPLICATION. 
All Communications to be Addressed- 
Instrument Company , Cambridge , England. 
