. The microscope and its revelations. rom 200 measmemeiits by Dallinger at no more than ._,,,,/, th of an Although this species does not ordinarily multiply in any other way than by transverse sub-division, yet, under cultivation at a temperature of 86° Fahr., itscells have been seen to elongate themselves into motionless rods,resembling those of Bacilli, whose endoplasm breaks up into separateparticles that are set free as small bright almost spherical spores,which sometimes congregate so as to form a Thesegerminate into short slender rods, which are at first motionless,
. The microscope and its revelations. rom 200 measmemeiits by Dallinger at no more than ._,,,,/, th of an Although this species does not ordinarily multiply in any other way than by transverse sub-division, yet, under cultivation at a temperature of 86° Fahr., itscells have been seen to elongate themselves into motionless rods,resembling those of Bacilli, whose endoplasm breaks up into separateparticles that are set free as small bright almost spherical spores,which sometimes congregate so as to form a Thesegerminate into short slender rods, which are at first motionless, butsoon undergo transverse fission, and then acquire The Vibriones may be represented by V. rui/ula, seen in fig. are slightly curved rods and threads, from (5/j to 16ytt long, andvarying in thickness from to 2/.irillf( are the largest forms in the group, characterised b\. Fio. 49).—A, Spirillum ttndiiht, showing flagellum at each end. Magnified 3,000diameters. B, Spirillum volutans. Magnified 2,000 diameters. (Dallinger.) their spirally formed cells and their graceful spiral motion. The\are fairly represented in fig. 495 by Spirillum undula (A) andSjiirillti in i-oliitxiti* (B). The threads of the former are from 1lu tol4u in thickness, and from 9^t to l2/.i in length. They are intenselyactive, and possess a flagellum at either end. They are found invarying decomposing infusions. Xj>irilli(iu. rolntfuis was known to and named by Ehrenberg. Itis from 1-5^ to 23/n in thickness, and varies from 2-)^ to 30ju ormore in length. It has distinctly granular contents, and a veryeasily demonstrable flagellum at each end of the spiral ; a fla-gellum was distinctly suggested by Ehrenberg on account of the vor-tical action visible in the fluid before this spirillum as it advanced. With the beautifully corrected 6mm. power of Zeiss (apochromatiedry 0-95), a
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectmicrosc, bookyear1901
