670 



MICROSCOPE. 



Fig. 54. The bracelet Leucophrys This ani- 

 malcule is shown in the figure with a portion of 

 the inner edge ciliated. 



Trichoda " Diaphanous, partially ciliated ani- 

 malcules." 



Fig. 55. Trichoda vulgaris " Whose crusta- 

 ceous covering is the shape of a cup, at the cir- 

 cumference of which radiate several strong spines." 



Kerona. " Animalcules furnished with hooks 

 (uncini}, bristles (seta), or horn-like processes." 



Fig. 56. Kerona pullaster " The fore part, in 

 addition to the cilia, is stated to have three seta?. 

 The cilia at the opposite extremity, are often se- 

 parated ; at other times they are collected in a 

 cluster." 



Himantopus, " Pellucid animalcules, with a 

 cluster or tuft of hair." 



Fig. 58. Himantopus larva " This is a very 

 lively creature, swimming and turning in the water 

 in a graceful and diverting manner, inflecting itself, 

 as shown in the figure; the body gradually de- 

 creases towards the posterior, and at intervals 

 several hairs appear disposed along it. The 

 margin is fringed." 



Vurticella ' They vary much in their organi- 

 zation ; hence I have formed them into two divi- 

 sions. They are naked, contractile, and possess 

 cilia, circularly disposed near the mouth, produc- 

 ing a vortex in the water; in many of them they 

 appear to rotate like a wheel." 



First Division, Polygastrica. Including the 

 animalcules which possess a number of digestive 

 sacs or stomachs. 



Second Division, Rotatoria. The highest 

 class of infusorial animalcules, so named from their 

 rotatory motion. 



Fig. 57. Vorticella cyathini." This animalcule 

 is shown swimming freely ; the edge of the bell is 

 ciliated, though not exhibited in the sketch : it can 

 attach itself by the stem, which it contracts spir- 

 ally." 



lirachionus. " This genus is composed of ani- 

 malcules enclosed within, or partially covered by, 

 a shell-like coat. They possess rotatory organs, 

 like the vorticella, and form, in Ehrenberg's ar- 

 rangements, a parallel order." 



Fig. 53. Brachionus passus. " A curious little 

 creature, with two long bristles in front, like the 

 antenna? of an insect." 



It is proper to notice here, that our space did 

 not allow us in many instances to transcribe the 

 whole of Mr Pritchard's descriptions, but only so 

 much as was absolutely necessary to convey gen- 

 eral information on the subjects illustrated. 

 Though, indeed, we rather owe an apology to the 

 author for taking so much of his admirable per- 

 formance, than an explanation to our readers for 

 taking so little. 



We have now completed the design which we 

 proposed to ourselves in the opening of this article. 

 That we have added something considerable to 

 the popuiir knowledge concerning the microscope 

 and the wonders it reveals, may, we think, with- 

 out vanity, be assumed ; for with the aids and ap- 

 pliances so courteously presented for our assistance, 

 we could scarcely fail to communicate much inter- 

 esting information on the subject. It does not 

 perhaps fall within our province to moralize on the 

 theme of this essay, otherwise it would be easy to 

 show that there is something connected with mi- 

 croscopic research infinitely more important than 

 the gratification of an abstract curiosity regarding 



the minute world. It will be neither tedious nor 

 out of place, however, to observe, thut the forma- 

 tions and phenomena revealed by the microscope, 

 present a phalanx of arguments asserting the being 

 and unceasing providence of a God ; whilst they 

 create a deep conviction in the heart of the ob- 

 server, (which no latent infidelity can effectually 

 stifle or destroy,) that human reason is totally 

 inadequate to comprehend Deity from observation 

 of His works, and that nothing short of the 

 Volume of Revealed Truth is able to bring man- 

 kind to a satisfactory knowledge of the Creator. 



On the subject of the Microscope, and Micros- 

 copic Discovery, we refer, inter alia, to Hooke's 

 Micrographia, Swammer dam's Hint. Gen. des In- 

 sectes, Power's Observations, Leeuwenhoeck' s Arcana 

 Naturce, Baker's Microscope made Easy, Derham's 

 Physico-Theology, Newton's Optics, Martin's 

 Philosophia Britannica, Sir D. Brewster's Trea- 

 tise on the Microscope, Coddinytori s Optical Trea- 

 tises, Muller's Animalia Infusoria, Ehrenberg's 

 Papers in the Transactions of (he Royal Academy 

 of Berlin, Pritchard's Natural History of Animal- 

 cules, Goring and Pritchard's Micrographia, and 

 Microscopic Cabinet, Pritchard's Microscopic Il- 

 lustrations, New and Enlarged Edition, Pritchard's 

 List of '2dOO Microscopic Objects, &c. &c. 



MILDERT, WILLIAM VAN, lord bishop of 

 Durham, was the grandson of an Amsterdam mer- 

 chant, and born in London, in 1765. He received 

 his education at Merchant-Taylors' school, and at 

 Queen's College, Oxford, where he graduated B.A. 

 1787, M.A. 1790, B. and D.D. 1813. In Trinity 

 term, 1788, he was ordained deacon, on the curacy 

 of Sheibourn and Lewknor, in Oxfordshire. He 

 afterwards became curate of Witham, in Essex ; 

 and during his residence at that place he married 

 Jane, daughter of the late general Douglas, who 

 survives him without issue. In Apiil, 1795, he 

 was presented by his cousin german and brother-in- 

 law, Cornelius Ives, Esq., to the rectory of Brad- 

 den, in Northamptonshire, from which he was re- 

 moved, at the close of 1796, to the rectory of St 

 Mary-le-bow, in the city of London. Between 

 the years 1802 and 1805, he preached the lecture 

 founded by the Right Hon. R. Boyle, and dis- 

 charged that duty with such eminent ability as to 

 attract the general attention of learned men. He 

 soon received a token of public approbation in the 

 vicarage of Farningham, Kent, which was conferred 

 upon him in the most flattering manner by arch- 

 bishop Sutton. His character, as a preacher and 

 divine, was now fully established; and in April, 

 1812, he was elected by a large majority of the 

 benchers to the preachersbip of Lincoln's Inn. In 

 September, 1813, he was appointed by lord Liver- 

 pool to be Regius Professor of Divinity at Oxford. 

 In Lent and Easter terms, 1814, Dr Van Mildert 

 preached the Bampton Lecture, to which he had 

 been appointed by the heads of houses before he 

 became professor. In March, 1819, he was made 

 bishop of Llandaff, and dean of St Paul's in the 

 following year. He then resigned his station at 

 Oxford, and divided his time between London and 

 Llandaff. In March, 1826, on the death of Dr 

 Shute Barrington, he was placed in the episcopal 

 chair of Durham. He died on the 21st Feb. 1836. 

 His publications consist of his " Boyle's Lectures," 

 his " Bampton's Lectures," and two volumes of 

 sermons preached at Lincoln's Inn. He also edited 

 the wovks of Dr Waterland published at Oxford in 

 1823, to which he prefixed a life of the author. 



