LOBB, ON A NEW MICROSCOPE. 175 



Forms of inflammatioii are superadded to fever^ because 

 reaction or counterworking in the corpuscles of bloody which 

 are cellular excreting bodies^ must disturb the qualities of 

 the fluid in which they swim^ and into which the morbid 

 matter they throw off must pass. 



The conclusion is that : — The generation of contagious 

 poisons in the blood arises from reaction in the corpuscles of 

 blood against injurious agents. 



The argument and conclusion of the preceding paper are 

 grounded on microscopical observations^ therefore its publi- 

 cation in the pages of the ' Microscopical Journal' is con- 

 sidered appropriate. 



Description of a New Microscope. 

 By E. G. LoBB, Esq. 



A^ Three strong legs, so arranged that the whole instru- 

 ment is suspended by them with the most perfect steadiness. 



R, Socket, in which the quadrangular bar r works, and 

 into which at 1 slide the side reflector and small coudensor. 



c, Brass circle, very strong and steady, at the top of which 

 is a plate of gun-metal, very finely graduated in quadrants. 



D, Appliance for the under stage, strongly affixed to the 

 brass circle c, having rack and pinion motion in connection 

 with the milled head 2. 



E, Mirror three inches diameter, plane and concave, with 

 treble arm for oblique illumination. 



F, Quadrangular bar working in socket b, by rack and 

 pinion motion in connection with milled heads 3, one only 

 to be seen. 



G, Arm containing the mechanism of the slow motion, 

 worked by a very fine screw in connection with milled head 

 4, which is graduated, the arm itself being strongly affixed 

 to the quadrangular bar f by the screw 5. 



H, Compound body, with spring tube 6, for applying the 

 object-glasses, and connected with the fine motion worked by 

 milled head 4. Inside the compound body is a draw-tube 

 graduated to four inches in the tenths of an inch, the eye- 

 pieces sliding into the draw-tube. 



I, Huyghenian eye -piece, of which five are supplied by the 

 makers. 



