They have emphasized the statements of Von Mohl, Cohn, and other writers alluded to, that the protoplasm is here also the dominant factor of the body, and that all the peculiarities of the cell-wall can only be interpreted in the light of the needs of the living substance.
Haematococcus palustris, Girod (= Chlamydococcus, Braun, Protococcus, Cohn), one of the (Epistola ad Vincentium), who declared that the flagellants were showing a tendency to slight the sacramental confession and penance, were refusing to perform the cullus of the martyrs venerated by the church, and were even alleging their own superiority to the martyrs.
On the history of railway legislation in England, see Cohn, Untersuchungen fiber die Englische Eisenbahnpolitik (Leipzig, 1874-83).
Practical methods are treated in Lassar-Cohn, Arbeitsmethoden fur organisch-chemische Laboratorien (4th ed., 1906-1907).
Cohn (Quantitative, 1903); F.
- Though the Latin version of this book was thrice printed in the 16th century (in 1527, 1550 and 1599), it was practically unknown to modern scholars till it was recognized by Conybeare and discussed by Cohn in the Jewish Quarterly Review, 1898, pp. 2 79-33 2.
On many grounds Cohn infers a Hebrew original.
70; for, as Cohn has shown, the exact date of the fall of Herod's temple is predicted.
- The general practice of laboratory distillation is discussed in all treatises on practical organic chemistry; reference may be made to Lassar-Cohn, Manual of Organic Chemistry (1896), and Arbeitsmethoden fiir organisch-chemische Laboratorien (1901); Hans Meyer, Analyse and Konstitutionermittlung organischer Verbindungen (1909).
Cohn and Wendland); ib.
Many of his works will be found in Migne, Patrologia Graeca, cix., cxii., cxiii.; for editions of the rest, C. Krumbacher, Geschichte der byzantinischen Literatur (1897), and the article by Cohn in Pauly-Wissowa's Realencyclopadie der classischen Altertumswissenschaft (1900) should be consulted.
His colleague in the department of public works, Sir Cohn Scott-Moncrieff, had been not less active.
(edited by Gerlach), 1901; Wagner (4 vols.), incomplete; Cohn (1889) and Eheberg (9th ed., 1908) have published works entitled Finanzwissenschaft, dealing with all the aspects of state finance.
Bacillus subtilis, Cohn, and Spirillum undula, Ehrenb.
As to the constancy of form, however, Cohn maintained certain reservations which have been ignored by some of his followers.
The fact that Schizomycetes produce spores appears to have been discovered by Cohn in 1857, though it was expressed dubiously in 1872; these spores had no doubt been observed previously.
In 1876, however, Cohn had seen the spores germinate, and Koch, Brefeld, Pratzmowski, van Tieghem, de Bary and others confirmed the discovery in various species.
In 1862 Pasteur placed it beyond reasonable doubt that the ammoniacal fermentation of urea is due to the action of a minute Schizomycete; in 1864 this was confirmed by van Tieghem, and in 1874 by Cohn, who named the organism Micrococcus ureae.
Pasteur and Cohn also pointed out that putrefaction is but a special case of fermentation, and before 1872 the doctrines of Pasteur were established with respect to Schizomycetes.
In 1862 Pasteur repeated and extended such experiments, and paved the way for a complete explanation of the anomalies; Cohn in 1872 published confirmatory results; and it became clear that no putrefaction can take place without bacteria or some other living organism.
In 1872, therefore, Cohn was already justified in grouping together a number of " pathogenous " Schizomycetes.
(After Cohn.) A.
The outcome of all these considerations is that, while recognizing that the " genera " and " species " as defined by Cohn must be recast, we are not warranted in uniting any forms the continuity of which has not been directly from the year 1872, when Cohn published his system, which was extended in 1875; this scheme has in fact dominated the study of bacteria ever since.
Division in all or any planes, colonies indefinite in shape and size, of cells in short chains, irregular clumps, pairs or isolated :- Micrococcus (Cohn), cells non-motile; Planococcus (Migula), cells motile.
Sporogenous rodlets cylindric, not altered in shape: - Bacillus (Cohn), non-motile; Bactrinium (Fischer), motile, with one polar flagellum (monotrichous); Bactrillum (Fischer), motile, with a terminal tuft of cilia (lophotrichous); Bactridium (Fischer), motile, with cilia all over the surface (peritrichous) .
(a) Filaments rigid, non-motile, sheathed: - Crenothrix (Cohn), filaments unbranched and devoid of sulphur particles; Thiothrix (Winogr.), as before, but with sulphur particles; Cladothrix (Cohn), filaments branched in a pseudo-dichatomous manner.
In effect the urea first becomes carbonate of ammonia by a simple hydrolysis brought about by bacteria, more and more definitely known since Pasteur, van Tieghem and Cohn first described them.
Cohn long ago showed that certain glistening particles observed in the cells of Beggiatoa consist of sulphur, and Winogradsky and Beyerinck have shown that a whole series of sulphur bacteria of the genera Thiothrix, Chromatium, Spirillum, Monas, &c., exist, and play important parts in the circulation of this element in nature, e.g.
Cultivation of which have been successfully carried out by Cohn, Beyerinck, Fischer and others.
Seligman, Shifting and Incidence of Taxation (2nd ed., 1899); Garnier, Traite de Finances; Cohn, System der National-Okonomie; Wagner, Finanzwissenschaft; Roscher, System der Finanzwissenschaft.
Lucknow, where a small British garrison was besieged in the residency, was twice relieved, once temporarily by Sir James Outram and General Havelock, and afterwards permanently, by Sir Cohn Campbell, who had been sent out from England to take the chief command.
Still later, in 1874, Dr Cohn, after the most exhaustive experiments and bacteriological research, realized that the disease was caused by a bacillus, and - nine years later - the name Bacillus alvei was given to it by Cheyne and Cheshire, whose views were in agreement with those of Dr Cohn.