cover image: The Indian Journal of Medical Research  January 1926

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The Indian Journal of Medical Research January 1926

1926

The auxiliary condensing system therefore is an arrangement of lenses by means of which as much light as possible is collected from the illuminant and brought in the form of a beam of either parallel or converging rays onto the back of the substage condenser ; this latter then brings the light to a focus upon the object in such a manner as to place the latter at the apex of the solid axial cone re [...] The relative positions of the illuminant the auxiliary condenser and the iris of the substage condenser must be such as to ensure that the image of the radiant thrown on the iris is large enough to cover a sufficient area of the back lens of the substage condenser to make use of the full aperture of the latter ; if this condition is not complied with then the requirements of the objective will no [...] It has already been pointed out that the use of a condenser of greater focal length than the objective results in narrowing the angle of the cone of light and thus reducing N. A. and with it the resolving power of the objective and also the illumination of the image. [...] The selection of the substage condenser should therefore be made with the general object of securing the smallest area of illumination compatible with the size of the field of view of the objective. [...] The general principle to be kept in mind when arranging the illumination of an object for photomicrography by transmitted light is that the best position for the latter is at the apex of the cone of light formed by the substage condenser ; any divergence from this position intended to increase the area of illumination by securing a wider section of the cone will lower the quality of the image ; s
technology medicine science
Pages
368
Published in
India
SARF Document ID
sarf.120195
Segment Pages Author Actions
Frontmatter
i-xi The Director General, Indian Medical Service view
Note on a Massive Infection of the Pharynx of Phlebotomus Argentipes with Herpetomonas Donovani
441-444 H.E. Shortt, P.J. Barraud, A.C. Craighead view
On the Present Position of the Rat-Bite Spirochæte (Bombay)
445-i R. Row view
Photography from the Microscope
449-x C.M. Hutchinson view
On the Occurrence of Paralyses after Treatment with Antirabic Vaccine
467-474 J.W. Cornwall, W.A. Beer view
On the Rate of Multiplication of Rabies Fixed-Virus in Rabbits
475-482 J.W. Cornwall, W.A. Beer view
On the Variation in Amount of Soluble Protein Contained in Old Broth Cultures of B. Typhosus
483-ii J.W. Cornwall view
On the Persistence of B. Typhosus in Rabbits After Intravenous Injection
491-492 J.W. Cornwall, W.A. Beer view
Observations on Ankylostomiasis in Some Areas in British India
493-xiv Vishnu Korke view
A Case of Undulant Fever in Aden
525-530 S.D.S. Greval, C.K. Row view
Kala-Azar on the West Coast of India
531-532 M.R. Mudaliar, T.K. Raman, K. Menon view
Some Medicinal Plants Growing in the Himalayas
533-538 R.N. Chopra view
Ankylostomiasis Among the Troops in Dehra Dun
539-546 G. Covell view
Relation between Different Modes of Sterilization of Vaccine and Protective Power
547-554 K.R.K. Iyengar view
An Attempt to Increase the Virulence of a Micro-Organism by Method of Culture
555-558 K.R.K. Iyengar view
Notes on Some Indian Species of the Genus Phlebotomus. Part XV.—Phlebotomus newsteadi n. sp.
559-564 J.A. Sinton view
Studies in Malaria with Special Reference to Treatment. Part I. Introduction and Routine Methods
565-578 J.A. Sinton view
Studies in Malaria with Special Reference to Treatment. Part II. The Effects of Treatment on the Prevention of Relapse in Infections with Plasmodium Falciparum
579-602 J.A. Sinton view
Studies in Malaria with Special Reference to Treatment. Part III. The Value of 'Provocative Methods' in the Diagnosis of Uncured Malarial Infections
603-616 J.A. Sinton view
New Heterakids from Indian Galliform Birds
617-624 Asa Chandler view
The Rate of Loss of Hookworms in the Absence of Re-Infections
625-634 Asa Chandler view
Effects of Vaso-Ligation in Dogs
635-636 J.P. Arland view
The Epidemiology of Cholera (II)
637-692 A.J.H. Russell view
Chemotherapy of Antimonial Compounds in Kala-Azar Infection. Part XVIII. Further Observations on Certain Derivatives of P-Amino-Phenyl Stibinic Acid Continued
693-694 Upendra Brahmachari, Judhisthir Das view
Certain Observations on the Mechanism of Quinine Hæmoglobinuria in Man. No. 2
695-696 Upendra Brahmachari view
The Anopheline Fauna of a Swamp in Bangalore
697-vi M.O.T. Iyengar view
An Investigation of Kala-Azar in Certain Endemic Areas in Southern India
703-748 D.A. Turkhud, K.V. Krishnan, P.V. Iyer view
Correspondence
749-750 The Director General, Indian Medical Service view
Backmatter
i-vi The Director General, Indian Medical Service view

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