large/8902/a_study_in_scarlet_1406_librivox_64kb_mp3/studyinscarlet_01_doyle_64kb_28
large/8902/a_study_in_scarlet_1406_librivox_64kb_mp3/studyinscarlet_01_doyle_64kb
English
8902
As he spoke, he threw into the vessel a few white crystals, and then added some drops of a transparent fluid. In an instant the contents assumed a dull mahogany colour, and a brownish dust was precipitated to the bottom of the glass jar. "Ha! ha!" he cried, clapping his hands, and looking as delighted as a child with a new toy. "What do you think of that?" AS HE SPOKE HE THREW INTO THE VESSEL A FEW WHITE CRYSTALS AND THEN ADDED SOME DROPS OF A TRANSPARENT FLUID IN AN INSTANT THE CONTENTS ASSUMED A DULL MAHOGANY COLOR AND A BROWNISH DUST WAS PRECIPITATED TO THE BOTTOM OF THE GLASS JAR HA HA HE CRIED CLAPPING HIS HANDS AND LOOKING AS DELIGHTED AS A CHILD WITH A NEW TOY WHAT DO YOU THINK OF THAT
stan, I perceive.” “How on earth did you know that?” I asked in astonishment. “Never mind,” said he, chuckling to himself. “The question now is about hæmoglobin. No doubt you see the significance of this discovery of mine?” “It is interesting, chemically, no doubt,” I answered, “but practically——” “Why, man, it is the most practical medico-legal discovery for years. Don’t you see that it gives us an infallible test for blood stains. Come over here now!” He seized me by the coat-sleeve in his eagerness, and drew me over to the table at which he had been working. “Let us have some fresh blood,” he said, digging a long bodkin into his finger, and drawing off the resulting drop of blood in a chemical pipette. “Now, I add this small quantity of blood to a litre of water. You perceive that the resulting mixture has the appearance of pure water. The proportion of blood cannot be more than one in a million. I have no doubt, however, that we shall be able to obtain the characteristic reaction.” HARDLY HAVE GIVEN HIM CREDIT YOU HAVE BEEN IN AFGHANISTAN I PERCEIVE HOW ON EARTH DID YOU KNOW THAT I ASKED IN ASTONISHMENT NEVER MIND SAID HE CHUCKLING TO HIMSELF THE QUESTION NOW IS ABOUT HIMOGLOBIN NO DOUBT YOU SEE THE SIGNIFICANCE OF THIS DISCOVERY OF MINE IT'S INTERESTING CHEMICALLY NO DOUBT I ANSWERED BUT PRACTICALLY WHY MAN IT'S THE MOST PRACTICAL MEDICO LEGAL DISCOVERY FOR YEARS DON'T YOU SEE THAT IT GIVES US AN INFALLIBLE TEST FOR BLOODSTAINS COME OVER HERE NOW HE SEIZED ME BY THE COAT SLEEVE IN HIS EAGERNESS AND DREW ME OVER TO THE TABLE AT WHICH HE HAD BEEN WORKING LET US HAVE SOME FRESH BLOOD HE SAID DIGGING A LONG BODKIN INTO HIS FINGER AND DRAWING OFF THE RESULTING DROP OF BLOOD IN A CHEMICAL PIPETTE NOW I ADD THIS SMALL QUANTITY OF BLOOD TO A LITRE OF WATER YOU PERCEIVE THAT THE RESULTING MIXTURE HAS THE APPEARANCE OF PURE WATER THE PROPORTION OF BLOOD CANNOT BE MORE THAN ONE IN A MILLION I HAVE NO DOUBT HOWEVER THAT WE SHALL BE ABLE TO OBTAIN THE CHARACTERISTIC REACTION
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