Transactions of the odontological society of Great Britain . j. He does not state if the leptothrixoccurs in his own mouth. In all unhealthy mouths, and especially in theearly stages of pyorrhoea alveolaris, the writerhas observed vibrios, of both comma and spiralform, these are the well-known spirillu7n sputu-genum and spiroclicEta dentum {vide figs. 3 and 4),and which so far have resisted all attempts atcultivation. The writer, after repeated endeavours, extend-ing over a period of more than two years, andafter many failures, has obtained a method bywhich these refractory organisms may be is


Transactions of the odontological society of Great Britain . j. He does not state if the leptothrixoccurs in his own mouth. In all unhealthy mouths, and especially in theearly stages of pyorrhoea alveolaris, the writerhas observed vibrios, of both comma and spiralform, these are the well-known spirillu7n sputu-genum and spiroclicEta dentum {vide figs. 3 and 4),and which so far have resisted all attempts atcultivation. The writer, after repeated endeavours, extend-ing over a period of more than two years, andafter many failures, has obtained a method bywhich these refractory organisms may be isolated,although at present it is impossible to say if allthe spiral forms met with belong to the samespecies; so far, however, all the cultures obtained,twelve in all, correspond with one another intheir main characteristics. On the surface of alkaline potato gelatin thewriter has obtained the spirillum five times fromfive consecutive cases. Three other cultureswere obtained at an earlier period of the investi-gation, but as the method did not always prove. Fifi. 8.—Spirill/nn SpiitiigenuDi, from mouth (direct), X 1,000.


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Keywords: ., bookcentury1800, bookdecade1860, booksubjectdentist, bookyear1868