The discovery of latent heat 250 years ago

The Discovery of Renin 100 Years Ago.

In 1898, Tigerstedt and Bergman published their observation that kidney extracts produce pressor effects. They characterized the substance and named it "renin." Although this was the beginning of understanding the role of the kidney in hypertension and the renin-angiotensin system, their discovery lay dormant for nearly 40 years.

40 Years Ago

always voice his unhappy or distressing thoughts, and it is often most difficult to recognise the way he is tending, or having recognised it to induce him to seek the help and advice that would save him. And even when his condition has been realised and the man himself persuaded to have treatment, the difficulties in the ^ay of obtaining it for him are often insuperable. Outside of London and a...

Twenty Five Years Ago

so rarely met witH that a description of the following case is not without interest. AEuropean, aged 38, was admitted on the 4th February, 1929, with paresis of the left arm and leg. His previous history showed that he contracted syphilis in 1915, for which he was treated with a full course of murcury and galvarsan. In 1919 his Wasserman reaction was still positive and he had a further course j...

Seventy Five Years Ago

Seventy Five Years Ago

In the present state of medical science, this subject is no doubt an obscure one, but it is highly interesting to the general pathologist and the scientist as well. Sir Joseph Fayrer, in his ? Dissertation on Elephantiasis of the Scrotum, has made a few remarks on the probable relation between lunar influence and the progress of elephantoid disease; but evidently from paucity of facts, he faile...