IX. Preliminary note on some points in the pathology of an­thrax, with especial reference to the modification of the properties of the Bacillus anthracis by cultivation, and to the protective influence of inoculation with a modified virus

1880 ◽  
Vol 30 (200-205) ◽  
pp. 557-560 ◽  

In the course of some experimental investigations into the pathology of anthrax at the Brown Institution, made during the past twelve months, two series of phenomena have been the subject of study, and in each some results which I believe to be novel have been attained. These results have not only a considerable practical importance, if verified by other observers, but their interest in relation to the patho­logy of anthrax and other diseases appears to me sufficient to warrant their communication to the Royal Society in the form of a preliminary note, leaving the full detail of the experiments for a future occasion. The practical purpose of these investigations was to ascertain (1) by what means the virus of splenic fever may be so modified as to be capable of inoculation without fatal result, and (2) whether a modified attack, produced by inoculation, exerts any protective influence against a future inoculation with unmodified virus.

1879 ◽  
Vol 28 (190-195) ◽  
pp. 358-367 ◽  
Keyword(s):  
The Past ◽  

1. The authors of this paper have devoted much time during the past twelve months to a study of sonorous vibrations and the reproduc­tion of speech. The invention of the phonograph has proved a great stimulus to this study. Many have worked in the same field, and many of the facts elicited by the authors have been anticipated by those who have been able to give more continuous study to the subject. Nevertheless, the mode of enquiry, the apparatus employed, and the results obtained are thought to be of sufficient novelty to justify their being brought before the Royal Society.


1894 ◽  
Vol 55 (331-335) ◽  
pp. 52-57 ◽  

My purpose in the following note is to submit to the Royal Society the results of experiments, made during the past year, relating to the “intra-cranial pressure” ( i. e ., the pressure to which the brain is normally exposed in the cranial cavity), and the changes which can be produced in it by alterations of the form and diminution of the capacity of the cranial cavity. . The experiments were undertaken at the suggestion of Professor Burdon Sanderson, and have been carried out with his help and criticism.


1932 ◽  
Vol 10 (2-3) ◽  
pp. 181-182 ◽  
Author(s):  
Marjorie J. Triffitt

Some preliminary experiments on the effects of potato root excretions in stimulating the larvæ of H. schachtii to hatch and emerge from the cyst, and the neutralisation of this stimulating factor by the root excretions of mustard seedlings, have already been described. Since chemical treatment of infected soil as a means of controlling the eelworm has been the subject of investigation in Europe for the past fifty years without yielding any results of practical value, investigations into the reactions of the paiasites to the root excretions of plants were undertaken in the hope that some result might be attained which would point to a solution of the eelworm problem on biological lines. The high degree of specialisation shown by the British potato-strain rendered it peculiary suitable for investigations of this character.


1919 ◽  
Vol 23 (102) ◽  
pp. 326-345
Author(s):  
H. Levy

At frequent intervals in the past the subject of the passage from model to full scale has received fairly thorough treatment at the hands of the members of this Society, and although a considerable mass of further material of extreme practical importance has since then accumulated, I do not propose to present it to you this evening. Those who are particularly interested in the data will find the greater part of it discussed in the Reports and Memoranda of the Advisory Committee for Aeronautics. I intend instead to devote this evening to a study of the question from a more theoretical standpoint, and in doing so I make no apology.


1888 ◽  
Vol 44 (266-272) ◽  
pp. 331-367 ◽  

The experiments described in the following paper were undertaken in continuation of those made by Dr. Main in the winter 1886-87, and described by him in a paper read before the Royal Society the following summer. The investigation is by no means complete, but the results hitherto obtained seem to us sufficiently novel and prosecute the subject further next winter. We shall first give a general account of our results, and then describe the experiments in more full detail.


1842 ◽  
Vol 132 ◽  
pp. 181-214 ◽  

149. In my paper on the "Chemical Action of the Solar Spectrum on preparations of Silver and other substances,” read to the Royal Society in February 1840, and of which the present communication is intended as a continuation or supplement, some experiments on the effect of the spectrum on the colouring matter of the Viola tricolor , and on the resin of guaiacum are described, which the extreme deficiency of sunshine during the summer and autumn of the year 1839 prevented me from prosecuting efficiently up to the date of that communication. The ensuing year 1840 was quite as remarkable for an excess of sunshine as its predecessor for the reverse. Unfortunately the derangements consequent on a change of residence prevented my availing myself of that most favourable conjuncture, and it was not till the autumn of that year that the inquiry could be resumed. From that time to the present date it has been prosecuted at intervals as the weather would allow, though owing to the almost unprecedented continuance of bad weather during the whole of the past summer and autumn (1841), it has of late been almost wholly suspended. In photographic processes, where silver and other metals are used, the effect of light is so rapid that the state of the weather, as to gloom or sunshine, is of little moment. It is otherwise in the class of photographic actions now to be considered, in which exposure to the concentrated spectrum for many hours, to clear sunshine for several days, or to dispersed light for whole months, is requisite to bring on many of the effects described, and those some of the most curious. Moreover, in such experiments, when unduly prolonged by bad weather, the effects due to the action of light become mixed and confounded with those of spontaneous changes in the organic substances employed, arising from the influence of air, and especially of moisture, &c., and so give rise to contradictory conclusions, or at all events preclude definite results, and obscure the perception of characters which might serve as guides in an intricate in quiry, and afford hints for the conduct of future experiment. It is owing to these causes that I am unable to present the results at which I have arrived, in any sort of regular or systematic connection; nor should I have ventured to present them at all to the Royal Society, but in the hope that, desultory as they are, there may yet be found in them matter of sufficient interest to render their longer suppression unadvisable, and to induce others more favourably situated as to climate, to prosecute the subject.


1892 ◽  
Vol 51 (308-314) ◽  
pp. 183-279 ◽  

The interest attaching to the presence of micro-organisms in water originated principally in the proof, which has been furnished by medical men, that some zymotic diseases are communicated through drinking water. In the case of two diseases, at any rate, the evidence may be regarded as conclusive on the main point, and the communicability of Asiatic cholera and typhoid fever forms one of the cardinal principles of modern sanitary science, which year by year is becoming more widely recognised and generally accepted. The germ theory of zymotic disease, which has become more and more firmly established during each successive decade of the past half century, was naturally soon impressed into the servico of those who sought to explain the empirical fact that these particular diseases are frequently communicated by water.


1892 ◽  
Vol 9 (4) ◽  
pp. 145-147
Author(s):  
Maria M. Ogilvie

During the past autumn, at the kindly suggestion of Prof. Baron von Bichthofen, I spent some months in the study of the strata and fossils of the neighbourhood of St. Cassian. My object was to endeavour, if possible, to determine the most natural subdivisions of these classic strata, and to fix their characteristic fossils. As the results I have obtained are somewhat novel, and may prove of interest to those who are familiar with the enigmatical character of the stratigraphy of the beautiful region of the Dolomites, I may, perhaps, be permitted to give in this place a short summary of my conclusions, in anticipation of a detailed paper upon the subject.


2021 ◽  
pp. 73-140
Author(s):  
Anna Marie Roos

Folkes’s social networks are the subject of chapter four, which analyses his participation in the Grand Masonic Lodge, and the revived Order of the Bath, as part of what Antti Matikkala has termed ‘The Chivalric Enlightenment’ a movement ‘essentially rhetorical, learned, antiquarian and eclectic’. Although the term ‘Enlightenment’ itself is contested, with so-called ‘Enlightened historians’ often scorning antiquarian pursuits, others, such as Folkes, had enlightened interest in the past which he and the Royal Society promoted. This chapter will also analyse the ties between the Masons and the Royal Society, and to what extent Folkes’s religious beliefs and participation in these organizations shaped the teaching of Newton’s work at Cambridge, as well as his editing of Newton’s Chronology and Ancient Kingdoms Revised with Thomas Pellett. We also will delineate how and why his participation in these social networks did not guarantee him the Royal Society Presidency when Newton died in 1727.


The chief materials for the present investigation consist of a number of embryos of the three common species of Apteryx which have come into my possession during the last three or four years. For some time I only succeeded in obtaining two or three specimens of advanced stages, and it was only when I was fortunate enough to secure the services of Mr. Richard Henry, of Lake Te Anau, as collector, that my material became copious enough to be worth working up. Even now my observations are in many respects very imperfect owing to the lack of a sufficient number of specimens, many of the most important stages being represented only by a single embryo. Since communicating a preliminary note (28) on the subject to the Royal Society I have found it necessary to extend my investigations, so as to include certain points in the structure of the adult, especially the pterylosis and the characters of the wing, the sternum, shoulder-girdle, and skeleton of the fore-limb, the muscles of the wing, and the brain.


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