12 1. \SK(Tiri I >K STUDIES. 



< >I',M:I:VA HON VI. Workman, a coppersmith <iii<;<-<-it*t<>-inl t, tin- iitiiuj<i<-iiirt' of chro- 

 iim/i. was exposed to the dud resulting from thi r/y/a//-///// <>f tin 1 L-itf/< 



of tin' iittK-'iiix nn,iinrii: <>f tin nOSe "//'/ 



F., a coppersmith ami a strainer to the chromate factory, came into the factory for 

 a short time TO repair the kettles. This repairing required a readjusting of the sides 

 by hitting with a hammer, and these Mows caused the crust of bichromate that 

 alheres in the slightest irregularities to fly about in tin- form of a dust. He was 

 attacked quickly ly inflammation of the mucous membrane of the nose and lost his 

 .nasal partition in eight days. 



( >i:>i-:i:vATioN XI. Superintendent^ not employed t <im/ />i'<-in} n-oi-k <']ir<>nir irrita- 



tion, x/r, //;,/,/ <>J ill i' tin nioi'iiin' d( tin' usual filar, , /,/// )i<> / ,-f<, ration . 



0., aged 20 (December, lsi;:5i, has been employed for four years in tlie eliminate 

 works. He ha< never worked at the kettles or the culciner. Charged with general 

 surveillance, he merely walks through the works; in exceptional cases, however, he 

 helps solder the lead crystalli/ini: vats that are in need of repairs. He has conse- 

 quently to a certain extent been subjected to the action of bichromate. At the time 

 we examined him he had felt a tingling of the nose and had frequent (its of snee/- 

 inir. but his nasal membrane had not been badly inflamed. His na-al partition is 

 not perforated, but at the usual point he has a slight swelling and reddening of the 

 membrane. His general health is good. 



( M-.>KKVATlo\ XVII 1. /*.",-, ;//'/!/ <<y<o.<,W /,, rhrininih' '/"</ P< rfo 



, ulcerated sores on tin i-it/ht 



!.. a-_'ed _>, has Itt-eii employed at the works for two years, ami for the last ten 

 months at the manufacture of potassium eliminate. He is employed as a fireman, 

 but often helps his fellow-workmen, and so luring much of the time spent in the 

 factory he is expo-ed to chnnnate dust. He had always enjoyed the best of health. 

 He had never had syphilitic symptoms, but during his infancy the glands at the side 

 of his neck were swollen fora longtime. His general condition is good. He had 

 worked at the manufacture of potassium chromate for scarcely iifteen days when he 

 was taken witli nose bleeding, snee/inir. pain in the nose, and watering of the eyes. 

 He .-oiiii'tiinrs experienced a little uneasiness in breathing. It was fifteen or twenty 

 days after he had ceased to work at the preparation of potassium chromate that he 

 examined his nose and found a small perforation. The nose preserves its normal 

 form. There is an ulcer on the nasal cartilage in the right nostril, and at the edges 

 of this the mucous membrane is very much inflamed. In the left nostril is an open- 

 ing corresponding to this ulceration. Hi- sense of smell is pre.-erved: neither the 

 throat, palate, m,r roof ,,f the mouth have been attacked, and he has no cough. 

 Thi- workman has hard, cartilaginous, livid scars upon his thumb and his right 

 hand. On the left index linger there exists a sore which is much swollen and 

 exudes a sen .-purulent liquid. This workman has never had any swelling or ulcera- 



tion of his feet. 



Tin-re are many other observations cited in the ahove article, hut 

 eiKuio-l, l )aV e | MM . n o-ivcn to ^how that pei-Noii* who are ohlio-ed to 

 hreathe air charged with the du>t from chromate^ or bichromate- are 

 nearly ahvav- atleeh-d more or lr-s >rriou-dv. 



