Various passages in his work seem show that considers the cryptogamic organisms called bacteria, as well as those known as vibrios, as belonging the animal kingdom no air enable them live, and being killed oxygen, should dissolved in the liquid any considerable extent. Weare unable see the matter in the same light as our learned colleague does our thinking, should labouring under a great delusion were suppose that quite as serious an omission not determine the animal or vegetable nature a ferment as would confound nitrogen with hydrogen or urea with stearine. The importance the solutions disputed questions often depends the point view from homework help persuasive writing which these are regarded.

As far as the result our labours custom research paper concerned, devoted our attention these two questions exclusively Is the ferment, in every fermentation properly called, an organized being?. Can this organized being live without air? Now, what bearing can the question the animal or vegetable nature the ferment, the organized being, have upon the investigation these two problems? In studying butyric fermentation, for example, endeavoured establish these the best essay writers two fundamental points. The hutyric ferment a vibrio. his vibrio may dispense with air in its life, and, as a matter fact, does dispense with in the act producing butyric fermentation. We did not consider at all necessary pronounce any opinion as the animal or vegetable nature this organism, and, even the present moment, the idea that vibrio an animal and not a plant in our minds, a matter sentiment rather than conviction. M. Robin, however, would have no difficulty in determining the limits the two kingdoms. According him, every variety cellulose may say, insoluble in ammonia, as also are the reproductive elements plants, whether male or female. Whatever phase evolution the elements which reproduce best essay writing a new individual may have reached, treatment with this reagent, either cold or raised boiling, leaves them absolutely intact under the eyes the observer, except that their contents, from being partially dissolved, become more transparent.

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Every vegetable whether microscopic or not, every mycelium and every spore, thus preserves in its entirety its special characteristics form, volume and structural arrangements whilst in the case microscopic animals, or the ova and microscopic embryos different members the animal kingdom, We should glad learn that the employment a drop ammonia would enable pronounce an opinion with this degree confidence the nature the lowest microscopic beings but M. Robin absolutely correct in his assumptions? That gentleman himself remarks that spermatozoa, which belong animal organisms, are insoluble in ammonia, the effect which merely make them paler. If a difference action in certain reagents, in ammonia, mla paraphrasing for example, were sufficient determine the limits the animal and vegetable kingdoms, might not argue that there must a very great and natural difference between moulds and bacteria, inasmuch as the presence a small quantity acid in the nutritive medium facilitates the growth and propagation the former, whilst able prevent the life bacteria and vibrios? Although as well known, movement not an exclusive characteristic animals, yet have always been inclined regard vibrios as animals, account the peculiar character custom writing essays services their movements. How greatly they differ in this respect from the diatomacae, for example! When the vibrio encounters an obstacle turns, or after assuring itself some visual effort or other that cannot overcome retraces its steps. The colpoda-undoubted infusoria-behave in an exactly similar manner. It true one may argue that the zoospores certain cryptogamia exhibit similar movements but not these zoospores possess as much an animal nature as the spermatozoa? As far as bacteria are concerned, when, as already remarked, see them dissertation editing services crowd round a bubble air in a liquid prolong their life, oxygen having failed them everywhere else, how can a void believing that they are animated an instinct for life, the same kind that find in animals? Robin seems wrong in supposing that possible draw any absolute line separation between the animal and vegetable kingdoms. The settlement this line however, repeat again, no matter what may has no serious bearing upon the questions that have been the subject our In like manner the difficulty which Robin has raised in object ing the employment the word germ, when cannot specify whether the nature that germ animal or vegetable, in many respects an unnecessary one.

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In all the questions which have discussed, whether were speaking fermentation or spontaneous generation, the word germ has been used in the sense origin living organism. If Liebig, for example, said an albuminous substance that gave birth ferment, could contradict him more plainly than replying No ferment an organized being, the germ which always present, and the albuminous substance merely serves its occurrence nourish help writing papers the germ and its successive In our Memoir, called spontaneous generations, would not have been an entire mistake have attempted assign specific names the microscopic organisms which met with in the course our observations? Not only would have met with extreme difficulty in the attempt, arising from the state extreme confusion which even in the present day exists in the classification and nomenclature these microscopic organisms, but should have been forced sacrifice clearness in our work besides at all events, should have wandered from our principal object, which was the determination the presence or absence life in general, and had nothing with the manifestation a particular kind life in this or that species, animal or vegetable.

Thus have systematically employed the vaguest nomenclature, such as mucors, torulae, bacteria, and vibrios. There was nothing arbitrary in our doing this, whereas there much that arbitrary in adopting a definite system nomenclature, and applying organisms but imperfectly known, the differences or resemblances between which are only recognizable through certain characteristics, the true signification which obscure. Take, for example, essay theses and dissertations on helping others the extensive array widely different systems which have been invented during the last few years for the species the genera bacterium and vibrio in the works Cohn, Hoffmann, Hallier, and Billroth. The confusion which prevails here very great, although not course any means place these different works the same footing as regards their respective merits. 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