Chemical constitution and toxicity

Chemical Constitution of Enamel and Dentin

An understanding of the calcification process requires exact. knowledge of the nature and variations of composition of the mineral phase of calcified tissues. Other investigators have continued the study, begun years ago, of the composition of the inorganic salts of bone, but a comprehensive study of the results of analysis of enamel and. dentin by modern methods has not been described. Crowell...

The Relationship between Chemical Constitution and Taste.

Some time ago the author had occasion to prepare a quantity of phenyl thio carbamide, and while placing it in a bottle the dust flew around in the air. Another occupant of the laboratory, Dr. C. R. Noller, complained of the bitter taste of the dust, but the author, who was much closer, observed no taste and so stated. He even tasted some of the crystals and assured Dr. Noller they were tasteles...

The barbiturates: chemical constitution and nomenclature.

BARBITURIC acid was first synthesized by Conrad and Guthzeit in 1882, and in 1903 the 5:5-diethyl derivative was introduced into medicine as a hypnotic by Carl Fischer and von Mering, under the name of Veronal. In the past, barbituric acid was usually regarded as the cyclic ureide of malonic acid, i.e. as malonyl urea, and its structural formula written in a form which emphasized this relations...

Antibacterial action and chemical constitution in long-chain aliphatic bases.

The success of sulphanilamide as a chemotherapeutic agent encourages the investigation of other classes of compound for antibacterial properties. The compounds 'described in this paper were the long-chain amines, amidines and guanidines which had been shown by King, Lourie & Yorke [1938] to possess remarkable trypanocidal powers. They were chosen because they had a proved biological action, and...

Velocity of Sound in Liquids and Chemical Constitution