Journal of Applied Microscopy and Laboratory Methods, Volume 4Bausch & Lomb Optical Company, 1901 - Microscope and microscopy |
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Common terms and phrases
acetic acid alcohol ammonium ammonium hydroxide amount animal apparatus appear bacillus bacteria barium blood body botanical cadmium calcium camera carbonate celloidin cells cent centrosome cesium chemical chloride chromatin color containing cover-glass crystals culture dilute elements embryo eosin experiments fibers filter fluid formalin formation gives glass glucinum glycerin granules hæmatoxylin heat histological hydrochloric acid hydroxide inches Jour laboratory large number larvæ lens leucocytes light magnesium material method methylen blue microscope microtome minutes mixture muscle nest nitric acid normal nucleus object obtained ordinary organism oxalic acid paraffin photographic physiology plate potassium precipitate preparation present produced protoplasm Raymond Pearl reaction reagent rubidium salt sections sent for review Separates of papers slide sodium soluble solution species specimens stain strontium structure substance sulphate sulphuric acid test drop tion tissue tube tubercle Ueber University washed xylol zinc
Popular passages
Page 1299 - Mosses with a Hand-Lens: a non-technical handbook of the more common and more easily recognized Mosses of the northeastern United States. Second Edition. Revised, enlarged, and including the Hepatics. 8vo. pp. xvi + 208. 39 pi. 151 f. in text. New York, 1905. 39. — "When Doctors Disagree.
Page 1556 - Notes on Species of North American Oligochaeta. IV. On a New Lumbriculid Genus from Florida, with additional notes on the Nephridial and Circulatory Systems of Mesoporodrilus Asymmetricus Smith.
Page 1265 - The light operates, naturally, on the part of the animal which it reaches. The intensity of the light determines the sense of the response, whether contractile or expansive, and the place of the response, the part of the body stimulated, determines the ultimate orientation of the animal.
Page 1268 - Med. acid 5 per cent, solution, trikresol '2 o • e , ' per cent., formaldehyde 5 per cent., and hydrochloric acid 10 per cent, to determine their preservative power on sputum containing tubercle bacilli. The sputum treated was examined at the end of 24 to 48 hours, after which time, weekly and then monthly examinations were made for a period of four months. Except with HC1 the preservation was good and the bacilli stained deeply; HC1 seemed to disorganize the bacilli. The author recommends the...
Page 1502 - The Histology of the Cell Wall with Special Reference to the Mode of Connection of Cells. I. The Distribution and Character of „Connecting Threads" in the Tissues of Pinus silvestris and allied Species by AW Hill.
Page 1422 - O.tj gm. of mercuric acid is now slowly added, and as soon as the mixture assumes a dark purple color it is removed from the flame and cooled rapidly. The stain is filtered and one drop of hydrochloric acid is added. The stain requires several weeks to ripen. It appears to keep indefinitely. Sections are stained from five to ten minutes and are then washed for about a minute in a 1 per cent, solution of nitric acid in alcohol ; the acid alcohol is then thoroughly removed with pure alcohol, and the...
Page 1267 - Germ is a noteworthy 26 : 45, pi. i. contribution towards a better knowledge of the parasitic bacterial diseases of plants. The paper, though ready for publication in 1897-, has been withheld till now to learn why such meager growth was obtained on the host plant. The Pseudomonas hyacinthi (Wakker) (EF Smith) is a yellow rod-shaped organism, non-sporiferous, color distinctly yellow but somewhat variable ; old cultures on some media darken from the production of a soluble pale-brown pigment. This...
Page 1174 - The tetrad division in a hybrid plant. It has long been known that hybrids are generally sterile, and it has also been known that the pollen of hybrid plants is commonly imperfect. The present writer investigated the formation of the tetrad in Syringa rothomagensis, a hybrid between S. persica and S. vulgaris. The form did not prove to be a favorable one for such a problem, because the pollen of both parents is poor, in .S. vulgaris about 50 per cent. of the pollen grains appearing to be incapable...
Page 1476 - ... the following manner: — To 100 cc. of distilled water add, drop by drop, anilin oil until the mixture is opaque. Shake well after each addition of anilin oil. Filter through moistened filter-paper until perfectly clear. To 100 cc. of the filtrate add 10 cc. of absolute alcohol and 11 cc. of concentrated alcoholic solution of gentian violet. After remaining the required time in this mixture the specimens are placed for about five minutes in the following iodin solution: — Iodin .............
Page 1456 - Ar /!7~) \ \ fl \X formation, as, for example, the concentration, depth of the test drop, amount of reagent added, acidity, etc. These variations are, however, not of a kind to render the test doubtful ; long prisms, either singly or in groups, being the rule. Remarks. — The remarks made under zinc are applicable to cadmium in every case. The double Sulphocyanate of cadmium and mercury is more soluble than that of zinc, hence Fig.