1020] VETERINARY MEDICINE. 785 



gave uniform and satisfactory results, no indication of goitre or hairlessness 

 boing evident in tiie young. 



Field experiments carried on in cooperation with stock owners indicate 

 ttint even smaller doses of lodin and less frequent application will prodiffe the 

 desired effect. The iodin administered to the does during one gestation period 

 appears to have a decided influence in preventing goitre in the young during 

 the subsequent period, but there is a great variation in individuals, and the 

 results obtained indicate that it is unsafe to depend on previous treatment as a 

 prevention of goitre. 



It is stated that iodin has been administered experimentally during the past 

 two seasons to sheep in tlie same way as to goats. In every instance where 

 iodin was administered to ewes during pregnancy, the young showed no indica- 

 tion of goitre or hairlessness. The sanu* results were obtained l)y practical 

 stockmen who used the treatment according to directions. 



In the experimental work with swine carried on for the purpose of determin- 

 ing the cause of goitre, results were so variable that no definite conclusions 

 could be drawn. In cooperative field tests with 24 practical stockmen durtng 

 the year in which 11 mares, 137 cows, G6 ewes, and 24 sows, treated with iodin, 

 dropped young, no indication of goitre or hairlessness was found in any of 

 the offspring. 



A gcroup of paratyphoid bacilli from animals closely resembling those 

 found in man, C. Tenbroeck {Jour. Expt. Med., 32 {1920), No. 1, pp. 19-31).— 

 " In addition to the paratyphoid bacilli already named there exists a group 

 which occurs in a variety of animals and which culturally is the same as 

 Bacillus schottmiiUeri. As a rule this group can be separated from the 

 latter by the type of clumps formed when bouillon cultures are used as antigens, 

 while other antigens and complement fixation tests have failed to differ- 

 entiate it. 



"Agglutination absorption tests sharply separate the animal from the human 

 paratyphoids. No differences have been detected between organisms of tliis 

 u'loup derived from a number of animals and a common name for them is 

 fh^sirable, but for the present it seems better to call theui calf-, swine-, mouse-, 

 I tc, typhus, according to the animal from which they were isolated. Evidence 

 exists in tlie literature tliat these organisms have been associated with food 

 infections in man, particularly with what liave been called paratyphoid B 

 infections, but this function, as well as the part they play in animal diseases, 

 is a subject for further study. 



, " ^^'ell-defined groups of paratyphoid such as B. cholcrw suis, the Voldag- 

 sen bacillus, B. abortus cqui, and B. enteritidis are found in animals in addi- 

 tion to the organisms considered in this paper, and every attempt should be 

 made to range newly isolated organisms in one or the other of these well- 

 recognized groups. One of the objects in continuing this work was to find a 

 method of differentiating these animal from the human paratyphoids less com- 

 plicated than agglutination absorption. This object was not realized; the two 

 groups are very similar, and agglutination absorption seems to be the only 

 means of classifying them." 



Studies on nacillus murisopticus, or the Rotlauf bacillus, isolated from 

 swine in the United States, ('. Tenuroeck {Jour. Expt. ^fcd., 32 {1920), Xo. 3, 

 pp. S31-3/f3, pi. 1). — " In the United States, organisms which culturally are 

 mouse septicemia or swine erysipelas bacilli have been isolated from the tonsils 

 of 5 of 16 pigs examined. These pigs all had hog cholera, but it is probable that 

 the bacilli were in the tonsils before they were infected with hog cholera, and 

 there is no evidence that they played any part in the disea.'^e. The distribution 



