SCIENTIFIC SUMMARY. 
225 
which is a square polished deal box, with lock and key. The two large 
bottles to the right contain the blue and scarlet transparent injecting- 
fluids, recommended by Dr. Beale, and which we have found extremely 
useful. The smaller bottles contain glycerine, marine glue, asphalt, Dean’s 
fluid, balsam, turpentine, chromic acid, carmine fluid, bichromate of potash, 
solution of caustic potash, and acetic acid. The two latter bottles are pro- 
vided with stoppers which project nearly to the bottom, and thus enable the 
student without loss of time to obtain a drop of the reagent he requires. Most 
of the other bottles, too, have projections from their stoppers for a like purpose. 
In the lower part of the case is seen a syringe, with stop-cock and nozzles, 
glass slides, razor in fixed handle, Maddox’s spring clips, covering-glass, tin 
cells, American letter clips (for stopping up vessels), curved needles, silk, &c. 
Of course it is quite possible that, in very complex investigations, other ap- 
paratus than those mentioned may be required ; but we think that, for all 
the purposes of ordinary investigation, the student will find all that he wants 
in this case. 
The Travelling Microscope . — Mr. Moginie, of the firm of Messrs. Baker of 
Holborn, has just devised the microscope represented in p.226, and they term • 
it the travelling microscope. It is intended to be placed in the telescope case 
(in the cut) and to be slung upon the shoulders like a field glass. The three 
legs form a solid firm support, and being hollow in the interior are employed 
to contain dipping tube, &c. The rough adjustment is telescopic, but the fine 
adjustment is provided for by a spring and screw placed on the upper part of 
the central or largest leg of the tripod ; this adjustment, so far as we have 
seen, is uniform and efficient. When it is required to place the microscope 
in the vertical position, three smaller legs, enclosed in one of the tripod legs, 
come out, and may be screwed into the instrument, producing a tolerably 
