Oct 12, 1888.] 



SCIENTIFIC NEWS. 



379 



The front of the camera is made to slide back from 

 the microscope to facilitate this latter function. 



The camera itself has a range of 30 in., and the 

 amplification is obtained by sliding back the focussing 

 screen frame of the camera, which has guides, working 



In this apparatus the front end of the camera is abso- 

 lutely immovable. The back portion of the camera 

 traverses a suitable raised platform or support, to which 

 it can be clamped in any required position. 



To centre the illumination and the object on the stage, 



Fig. 2. 



in grooves in the framed base, with clamp screws to fix 

 it in any desired position. 



A graduated scale is let into the base of the camera 

 whereby the distance between the lens and the focussing 

 screen can be accurately known, and the desired 

 amplification readily calculated. 



By means of a rod running along the side of the 

 camera the fine adjustment of the microscope can be 

 actuated from the back of the camera. 

 I Altogether it is a very simple, efficient, and well 

 thought out instrument. 



Messrs. J. Swift and Son, the well-known opticians of 

 Tottenham Court Road, are the manufacturers of several 

 very beautiful forms of photographic apparatus. Their 

 latest, which is represanted in fig. 3, is novel in several 

 respects. 



In this instrumant a specially constructed microscope 

 is used. The tube of the microscope being immovable, 

 the stage and sub-stage traverse a strong horizontal bar, 

 by means of rack and pinion motion, by moving which 

 the coarse adjustment is effected. 



The bar carrying the stage is fixed to a stout brass 

 plate into which also the short body-tube is fitted, the 

 whole being secured to the vertical front standard of the 



the camera is closed up to the microscope as far as it will 

 go, and a board, into which is centered a brass fitting to 

 take a microscopic eye-piece, is fitted into the grooves, 

 which receives the dark-slide. The camera is thus 

 made to form the body-tube of the microscope, and on 

 inserting an eye-piece the object on the stage can be 

 examined with comfort ; everything being satisfactorily 

 arranged there, the camera is extended, and the focussing 

 done as usual. 



The whole apparatus is mounted on a mahogany base, 

 and is very light and portable. 



(To be continued.} 



THE ANCIENT INHABITANTS OF THE 

 CANARY ISLANDS. 



A Paper read by Mr. J. Harris Stone 



by 



the Anthropological 

 Association. 



Section of 



m.a., before 

 the British 



(Continued from page 359J 

 THE narrative of the conquest by Jean Bcthencourt, a 

 Norman nobleman, is written by Brother Pierre 

 Bontier and Messire Jean le Verrier, priest, " both 



Fig. 3. 



camera. The fine adjustment is accomplished by means 

 of a milled head which acts on the stage. 



The camera is compound, and consists of a conical 

 leather bellows attached behind to a rectangular mahogany 

 o x, and in front to the strong vertical standard before- 

 mentioned, to which thespecial microscope is also secured. 



learned clerks," to give their own estimation of them- 

 selves in their own language. 



An admirable translation is given by R. H. Major, in 

 one of the volumes of the Hakluyt Society. 



In this narrative there is little direct information re- 

 specting the ancient Canarians, The priestly narrators 



