The Microscope. 71 



Hippuric rheumatism. — This is rare and found usually in 

 heav}'^ feeders on vegetable foods, such as oatmeal. In the blood 

 it is in granular form; crystalline forms in urine. 



Carbonate of lime rheumatism. — Rare. Present in the blood 

 in granular form, and in the urine in solid globes with radial 

 rays and dark color. Effervesce with acids. 



Differential diagnosis. — When persons complain of fugitive 

 wandering pains it is usuall}^ called rheumatism, especially if 

 the pain increases at night ; but these pains ma}^ be due to 

 nervous prostration or neuralgia, that is " pain in the nerves," 

 the cause of which we are unable to find out. Once at a medical 

 college I wished to study for demonstration rheumatic blood. 

 A woman was brought to the dispensary with rheumatism. But 

 her blood showed no signs of rheumatism. On examination she 

 was found to have uterine disease which caused the pains. 



Often have men come to be treated for rheumatism and their 

 blood found to be normal, but careful exploration has found 

 continuously in the urine for the larger part of a week proto- 

 plasm in skeins or Indian club-shaped catarrhal discharge, which 

 accounted for the pain by neurasthenia. A one-inch objective 

 is best for the detection of this catarrh. 



U. S. PORK INSPECTION FOR TRICHINA, AND A 

 GROOVED STAGE DEVICE FOR FACILITATING 

 THE WORK. 



DAVENPORT FISHER, PH. D. 



I HAVE been requested to contribute to The Microscope the 

 methods in use by the microscopists employed at the inspec- 

 tion of pork for Trichinae in the Bureau of Animal Industry of 

 the TJ. S. Department of Agriculture. I have had charge of the 

 branch of the Bureau in Milwaukee from the start, and had pre- 

 viously conducted a similar inspection for one of the large 

 packing houses here on their private account. I commenced 

 June 8th, a week before the Government started in Chicao-o. 

 Being unable to obtain information regarding the methods they 



