166 REPORT OF THE BUEEAU OF ANIMAL INDUSTRY. 



On December 22, another lot of 133 pigs were shipped ; 33 were destined for Nice, 

 and 100 for Italy. These last were sold on the 24th, in the market of Vintimille ; 

 nearly all died very soon. 



For several years Marseilles annually exported to Spain, and especially to Bar- 

 celona, a great number of pigs. Contagious pneumonia had been causing losses 

 there for several months, even, it is said, at Majorca in the Balearic Islands. The 

 Spanish breeders, believing the outbreak of the disease with them was attributable 

 to the importation of French pork, obtained from the authorities the permission to 

 impose a quarantine of six days at Port Bouc on swine from Marseilles, to begin on 

 the 1st of the following February. This measure has not been enforced up to the 

 present day. 



From what has preceded I believe I can con elude that the epizootic of contagious 

 pneumonia which has raged during the year 1887 in the interior of France, and 

 which, at this time, continues its ravages there, is of African origin. It has been 

 introduced by Algerian swine which came from the province of Oran. This disease 

 has made 20,000 victims in several months in the province of Bouches-du-Rhone. 



Pigs, and especially those from three to nine months old, are pftenest attacked ; 

 larger pigs appear less susceptible. The Marseilles breed, English (Yorkshire and 

 Berkshire), and the Russian swine are more susceptible than the African swine. 



Two months ago about 50 pigs two to three months old, coming from Cazeres and 

 Le Fousseret, in the arrondissement of Muret, were used to stock a farm in Gignac. 

 These pigs, placed in the pens which had contained sick ones, and which had only 

 been very imperfectly disinfected, remained in good health, while more than a hun- 

 dred cases of contagious pneumonia appeared around them in the same piggery. 

 Afterwards more than 2, 000 Gascon swine were imported by*the single commune of 

 Gignac. Up to the present time the disease has not re-appeared. Are we here con- 

 fronted by a new example of natural immunity comparable to that noticed long ago 

 by Chauveau in Algerian sheep in regard to anthrax? 



Taking into consideration what we know now of these epizootics 

 and enzootics of swine diseases in foreign countries, we are forced to 

 the conclusion that the disease in Sweden, Denmark, and France is 

 closely related to, if not identical with, hog cholera as it is found in 

 our country. 



