Kennedy indicated the microscope. "Take a look at that slide under the lens," he said simply.
I was nearest and as he evidently meant each of us to look, I did so. Under the high-power lens I could see some little roundish dots moving slowly through the field.
Haynes looked next. "But, Professor Kennedy," he objected, almost as soon as he had time for a good look, "the bacilli of anthrax have normally the form of straight bars strung together in a row."
"Yes, rod bacilli," added Dr. Leslie, also looking. "Like long rows of hyphens, slender cylindric, non-motile chains joined end to end."
We looked at Craig inquiringly.
"Like that," he indicated, substituting another slide.
We looked again. The field had somewhat the appearance of an exaggerated war map with dark units of supposed troops.
"That's it," nodded Haynes.
Kennedy removed the slide. "Those are some anthrax germs I obtained here in the city from a pathologist," he said, turning a switch that threw on in a lamp a peculiar, purplish light. "This is a machine for the propagation of ultra-violet rays."
He placed the second slide, with its germs of anthrax, in the light, allowing it to play over the slide.