British, French, and Dutch Weights. 75 



An English hundredweight, or 1121b, avoirdupois=102.8241b, 

 Amsterdam weight. 



How far the use of heavier weight than our neighbours 

 may be beneficial in a commercial point of view, and whether 

 such attempts may lead to any practical result, is not for me 

 to investigate. 



I. ON A REMARKABLE CASE OF CORYZA PHLEGMATICA. 

 II. ON THE DIRECT FORMATION OF OXIDE OF IODINE 



AND IODOUS ACID. 



III. ON NITROGEN IN NATURAL WATERS. 



By the CAVALIERE LUIGI SEMENTINI, of Naples, M.R.I. &c. 



In a Letter addressed to the Secretary of the Royal Institution. 



I. /^ORYZA PHLEGMATICA. The following account of an 

 uncommon disease, which has recently come under my 

 observation and cure, may not be unacceptable. A similar 

 affection has been called by Sauvages and Borsieri, Coryza 

 Phlegmatica or Phlegmatoragia. 



The patient, who was about fifty years old, abounding in 

 humours, and of a sanguine temperament, after a strong fit of 

 sneezing, was suddenly affected with a constant running from 

 the right nostril of a clear liquid, in large drops, to the number 

 of twenty-five in a minute, and of twelve at the least ; but the 

 diminished number occurred only during the hour after dinner. 

 The discharge increased to the larger number of twenty-five 

 drops per minute in the evening, and continued without inter- 

 ruption during the whole course of the night. Hence the 

 patient was obliged to take his rest in an uneasy position, with 

 his head inclined forward, without which precaution he would 

 have been suffocated. In walking, on the contrary, he went 

 with his head erect, in order that the liquid might fall into the 

 fauces, from whence he discharged it by large mouthfuls, thus 

 avoiding the disgust of having his face and clothes continually 

 soiled. 



The fluid in 'question had a strong saline taste, and the 

 patient was obliged to muffle up his nose during meals, in 



