Parasites of Muscular and Connective Tissue. 435 



2. Examine Microscopically all Pork Intended for Human 

 Consumption. This is not so absolute a protection as thorough 

 cooking, yet so long as trichinous swine are sent to market, 

 and the carcases of all cannot be thoroughly cooked, it is a most 

 effective, though not an absolute safeguard. But, as in the 

 cooking, so in this, the work must be universal, uniform and 

 thorough. In Germany, where the habit of eating raw or under- 

 done pork subjects the measure to its greatest test, epidemics of 

 trichinosis after eating inspected pork, are not uncommon. In- 

 spectors grow careless, trusting to the immunity of swine in given 

 regions, and when trichinosis has occurred in man, the faithless 

 officer is subjected to fine and imprisonment. In other cases 

 butc+iers mislead the inspector, secreting a number of carcases 

 and selling them later, on the strength of a supposed general in- 

 spection. In this case the penalties are visited on the butcher. 



In slight trichinosis, however, the worms being unequally dis- 

 tributed through the muscles, a number of examinations may be 

 made before any are discovered. Leuckart has repeatedly made 

 barren attempts until the tenth or twelfth trial, and Kiihn after 

 forty trials without result, found trichinae to be abundant in other 

 muscles of the same animal. The following table of the number 

 of trichinae found in particular muscles, serves to illustrate this 

 variation, as well as their habitual abundance in given muscles : 



Miiller Kramer 



I grain from Psoas contained 161 7 



" " Diaphragm " 129 8-|- 



" " Laryngeal Muscles " 126 21 + 



" " Lingual Muscles " 105 4-12+ 



" " Orbital Muscles " 64 



" " Abdominal Muscles " 54 7+ 



" " Masseter Muscles " 45 14 



" " Intercostal Muscles "8 7 



" " Pectoral Muscles " 33 9-I- 



" " Scapulo-Humeral " 18 28 



" " Pelvi-Femoral Muscles " 26 



" " Tibial Muscles " 26 



" " Longissimus Dorsi Muscles. _ " 20 



" Radio-Ulnar " 17 



" " Gastroc nemius " — 12 



In making inspections the muscles selected should include those 

 nearest to the abdominal walls, and especially to the points of 



