Microscopical Observations on a Malady affecting the Common House-Fly

Bacteriophage Isolated from the Common House Fly (musca Domestica)

1. Bacteriophage active against four species of bacteria was found in a salt solution extract of house flies. 2. A growth-inhibiting principle, not bacteriophage, active against four other species of bacteria was found to be present in the same extract. 3. An attempt to secure streptococcus bacteriophage by feeding to flies a streptococcus susceptible to the inhibitor but not to the bacteriopha...

Wings of the common house fly (Musca domestica L.): importance in mechanical transmission of Vibrio cholerae.

The importance of house fly (Musca domestica L) wings in mechanical transmission of bacteria was studied. A droplet of phosphate-buffered saline containing Vibrio cholerae was rolled along one wing of each house fly. None adhered to the wings but small proportions of the bacterium were isolated from about half the wings. Vibrio cholerae was spread onto the ventral wing surfaces of each unconsci...

Electron Microscopical Observations on a Very Small Flagellate: the Problem of Chromulina Pusilla Butcher

A Light-sensitive Yellow Pigment from the House-fly

Extraction of house-fly heads with neutral phosphate buffer yielded a dark brown solution from which a number of pigments were separated, either wholly or partially, by chromatography on a column of calcium phosphate mixed with celite. One of the pigments was light-sensitive, and had a yellow color, with a spectral absorption maximum at 437 mmicro in phosphate buffer at pH 6.5. Several consecut...

Porphyria—a Royal Malady*

FARMFR GEORGE was a mad king, and so we lost the American colonies: such in brief is the recollection of what the man-in-the-street garnered at school. It is remarkable that so little attention has been paid to the nature of George III's malady, and it is a sad reflection on British medical historians that during the 200 years that have elapsed since his first overt attack of illness, there hav...