Crossword-Solution: UREA 4 letters, 56 clues 🏆 scrabble score: 4

Carlisle mentions a case in which there was vomiting of a fluid containing urea and having the sensible properties of urine.

Several cases have been reported in which the specific gravity of the urine was extremely high, due to an excess of urea.

Therefore a veritable sensation was created in the chemical world when, in the year 1828, it was announced that the young German chemist, Friedrich Wohler, formerly pupil of Berzelius, and already known as a coming master, had actually synthesized the well-known organic product urea in his laboratory at Sacrow.

British glasshouse lettuce growers widely agree that lettuce sidedressed with blood meal about three weeks before harvest has a better "finish," a much longer shelf-life, and a reduced tendency to "brown butt" compared to lettuce similarly fertilized with urea or chemical nitrate sources.

That quantity of urea also costs about $15.00! Without taking into account its value in terms of phosphorus, potassium and other mineral contents, nitrogen from seed meal costs at least eight times as much per pound as nitrogen from urea.