Report of the Departmental Committee apointed to inquire as to precautions for preventing danger of infection from anthrax in the manipulation of wool, goat hair, and camel hair.
- Great Britain. Committee on Anthrax.
- Date:
- 1918
Licence: Public Domain Mark
Credit: Report of the Departmental Committee apointed to inquire as to precautions for preventing danger of infection from anthrax in the manipulation of wool, goat hair, and camel hair. Source: Wellcome Collection.
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![process in relation to normal clots. . Treatment of Test Material.—Assuming the correctness of the view that overheating was Seriés F ought to he disintegrated by a preliminary treatment much shorter than that used in in soap solution at a teniperature of 110° F. for two periods of 15 minutes, the test materials of 10 minutes each‘(in two experiments of 15 minutes each) of immersion in formaldehyde solution of approximately 23 per cent. strength, at a temperature of 102—103° F., followed by Results ——In some of the experiments the bloodclots were almost freed from blood; but in bacilli and very few colonies of other organisms could be cultivated from any. The test material was, in fact, practically sterilised by the treatment, and the results of Group 11 Throughout the whole group ‘the results were uniformly ‘good, and if comparison be made with earlier experiments (e.g., with those of Group 8) none of the disconcerting high counts of other organisms (which point ‘to inefficiency of treatment) are to be found. There was no known or observable difference between the bloodclots used in Group 8 and those used in EXPERIMENTS OF Group 12. Table 12.—Experiments with Natural Bloodclots. Process —(1)° Treatment in warm water. . (2) Squeezing through rollers. » | (3) Treatment in cold or warm formaldehyde solution. (4) Drying in’a current of hot-air. ; . % : Banger ; | Numbers of tose 3. hs gs. tc7t 2 : Treatment in Drying in Current Calvaies Ba oat cae ne Formaldehyde Solution. of Hot Air, Time growing on ei as elaps- Agar at 37° C, a Ing | from jth of a) 2) temo ; iat after | Material from z : pyre i he ae treated Clots. =f x ie | wo = cs eco il ; Meat % Times Moe ae Tem- Times so | Sha ata Uncountable. 44 » |Arrange-p ,| Solution | | ae MEE EY ue 2 Nature, | coe EPEAT | Time, PBeczed (per Cent.| pera- | Time. squeezed | Ojots in | Perar | Time. | Lasts ue All a : bili P ture. : ehrbugh by a through Drying ture. Solu- other : - | Rollers Wren OL Lair ‘Rollers. ap ) teomt | ) ABE Organ- “| CH.O). | i Machine. | | | thrax. | “sons, Pee | eS ESR. | Ming. | $F 2, Maing | | °F. |Ming,| Hours. | Hours. (1); S@jis>) $8) (4) 1. (8) | (6) Bh °C) | 8), ar OY | AY) (12) (18)) (14) | (15) | (16) 125 |. Large, |Innets|104°5;35 | 2; ) 2:38, Room.) 915) 4b Innets. | 212-15 0. — co natural among & ‘a | f°] | | Bussorah wool in | | . | clot; not | baths. i : | . infected. | e| Lt | | Toe ees Deeg F104. 135 2 tt 2°38 4 15 1 ~ DE2S Re ee —~ oa 127 7 - 102 | 30 Qi5.| 1 2°78 | 101 | 15 1 Loose 165) 15:5)” 0 — a o | on grids. | 128 2 fee 102 |) 30 2 2°78 ig ee a 1 ble 165 15, 24 — |. 440 129 Cn a ace 102 | 30 OMB ED Sy 101 30 1 ‘ AGhaly 20elds Chatter 33 130 * “4 102 |» 30 2 + VeVi [1M], |}. 805)) 21 | 35 165 | .20 4): 24 — 30 131 | “ ee 102 | 30 ia. ae ag 101 |, 60 Lats yt 180) Lopesed — 39 132 ey ie 102 | 30 2 2-78 | 101} 60 1 & 180 | 15) 24 — 357 133 | ” Piaowe (209-1) 80.) 2 11 2°82 102 | 20 2 % 157 |} 5 ly 0 — 550 among | | | i ku | ’ wool in | ig’ baths. |. ig | 134 | pS aa 102 | 20 2 |} 2:22 | 102 | 20 |i 2 Niot dried.* . —- 294 1 | | | * This clot was placed in ammonia solution immediately after the treatment in formaldehyde. Objects.—At.. intervals -natural clots were used in the experiments in order to obtain a comparison with the artificial clots. The comparison is not quite just, because the former contain mud, excrement, and foreign matters, and were usually much larger besides con- taining no anthrax spores. In the ten experiments of Group 12 none of the clots used was infected with anthrax, and most originated from Bussorah skin wool, They were all very large.](https://iiif.wellcomecollection.org/image/b32178049_0045.jp2/full/800%2C/0/default.jpg)
