10* 



finding tubercle bacilli in some of the former, erroneously 

 attributed them also to all of the latter. 



Park's account, as given by Tryon 1 in his epitome already 

 mentioned, is by no means clear. The following quotation 

 "a condition in the young parasites breaking up into frag- 

 ments almost in some instances identical like (to) tubercle 

 .- encapsuled embryo would appear with methylene 

 blue exactly like a giant cell or a multinucleated cell when 

 prepared fresh " (sic), confirms us in our view that his 

 worm-nests were rarely, if ever, the seat of secondary 

 tuberculosis, in spite of his statement that the results he 

 obtained showed clearly that "tubercle follows Spiroptera, 

 but Spiroptera never follows tubercle." We have not seen 

 any appearance such as "a small number of nodules" 

 becoming "as large as a skittle pin, assuming much the 

 same shape or lobulated like a kidney," nor do we think 

 that the worm-nests are associated with lymphatic glands. 

 In his second report, he stated that the specific name 

 reticulata, which he gave the parasite 'lid not imply that 

 it was the same species as found in the horse. The name 

 was given from the reticulate appearance of the tissue 

 (quotation from a lay newspaper). 



In Tryon's reference to Gibson's paper is the remark 

 that this author found tuberculosis associated with worm- 

 nests. This is evidently an oversight as no reference to 

 such an association occurs in the original account. Sydney 

 Dodd's communication already referred to supports our 

 contentions as to the harmlessness (from a Public Health 

 aspect) of the condition, the rarity of caseation or calcifica- 

 tion, and the absence of any connection with tuberculosis. 



Sites of the worm-nests and age of infected animals.— 

 By far the most common seat of the worm-tumours in 

 cattle is in the subcutaneous tissues over the brisket and 



