Just Published, by Whit taker and Co., Ave Maria Lane, London, 

 price 10s. Gd. 



MICROSCOPIC ILLUSTRATIONS 



LIVING OBJECTS: 



THEIR NATURAL HISTORY, ETC., ETC.; 



muti) fttgmtins 



CONCERNING THE MOST ELIGIBLE METHODS OF CONSTRUCTING MICROSCOPES, 

 AND INSTRUCTIONS FOR USING THEM, 



BY C. R. GORING, M.D. 



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BY ANDREW PRITCHARD, M.R.L, 



HON. MEM. SOC. ARTS, EDIN.; AUTHOR OF "NATURAL HISTORY OP ANIMALCULES," 

 ETC., ETC., ETC. 



" Contemporaneous with the publication of the First Edition of this Work a new 

 Era sprung up in Microscopic Science, disclosing to the students of nature and diligent 

 investigators into her more recondite operations, an illimitable field for observation. 

 Antecedent to the period just alluded to, Microcosm might almost have been termed a 

 world of its own, wherein myriads of living occupants, countless in species as in indi- 

 viduals, 'lived and moved and had their being,' unperceived by the intelligent faculty 

 of man ; and wherein they are as assiduously and dexterously engaged in the business 

 of life as those whose famed exploits resound throughout the earth. The vast pro- 

 ficiency arrived at in the constructing of Microscopes, and more especially the invest- 

 ing those instruments with effective achromatic lenses — an achievement we believe 

 entirely attributable to the authors of the ' Microscopic Illustrations,' has thrown a 

 light upon this most interesting subject, that can never again be obscured. In this 

 Edition, emended and considerably enlarged, Mr. Pritchard has furnished over and 

 above his descriptions of Aquatic Insects, and the almost incredible metamorphoses 

 they undergo, a comprehensive sketch of the uses of the Microscope and all its recent 

 improvements ; and also an excellent illustration of its application to the various sciences 

 and useful arts, especially Geology, Botany, Animal and Vegetable Physiology. He has 

 further explained, in popular language, the theory wherein consists the superiority of 

 the achromatic over the common Microscope. 



" In his additional chapters will be found, a practical account of the most approved 

 achromatic Microscope, for exhibiting the infinite variety of transparent and opaque 

 objects — all its apparatus — the mode of selecting magnifying powers suitable for the 

 purposes either of deep investigation or pleasurable amusement — the moveable stage — 

 the spring phial-holder for retaining plants and living creatures in such a position as to 

 render clearly perceptible the circulation through them — the polarizing Microscope, with 

 all the curious and beautiful phenomena elicited from crystalline bodies by the aid of 

 polarized light, including Mr. Talbot's experiments — the apparatus for dissecting under 

 the Microscope — the camera lucida, with the micrometer eye-pieces for drawing and 

 measuring of objects — the mode of illuminating on a black ground — a new method of 

 determining the forms of minute bodies, and observing the currents in fluids during 

 the process of evaporation : — all these, and various other highly-interesting subjects, 

 are so copiously treated of, and so accurately elucidated by means of Engravings, as to 

 render this Work a complete practical guide for using the Microscope, and constituting 

 it one of the most delightful and serviceable instruments for man, in promoting his 

 researches after truth." — Gateshead Observer. 



" Impressed as we are with the high importance of this branch of science, and with 

 the great value of the improvements which these gentlemen have introduced, we looked 

 fonvard with the most sanguine expectations ; and we have now no hesitation in stating 

 it as our opinion, that Dr. G. and Mr. P. have both accomplished their difficult tasks 

 with the greatest success. The coloured Engravings are executed in such a masterly 

 manner, that they will themselves bear to be seen by the Microscope." — Brewster's 

 Edinburgh Journal of Science. 



" The present publication cannot fail to recommend itself generally, for it is asso- 

 ciated with elaborate descriptions and beautiful coloured Engravings of a variety of 

 diverting and popular objects." — Journal of the Royal Institution. 



