Angola 1803 Bengo hemp plantation, Africans smoking dry (Saldanha primary + Duvall)

@@ -16,5 +16,5 @@ Generated from [books.yaml](books.yaml) and the local `books/` inventory. Refres
 | [Reefer Wellness: Understanding Cannabis Science, Culture, and Medicine](#kirk-reefer-wellness-2025) | verified | 0 / 8 | 0 | 8 | 0 | 0 | matches recorded hash |
 | [The Emperor Wears No Clothes](#herer-emperor-wears-no-clothes-undated) | verified | 1 / 16 | 1 | 14 | 1 | 0 | matches recorded hash |
-| [The African Roots of Marijuana](#duvall-african-roots-marijuana-2019) | verified | 4 / 10 | 3 | 3 | 45 | 4 | matches recorded hash |
+| [The African Roots of Marijuana](#duvall-african-roots-marijuana-2019) | verified | 4 / 10 | 3 | 3 | 46 | 4 | matches recorded hash |
 | [Cannabis: Evolution and Ethnobotany](#cannabis-evolution-and-ethnobotany) | awaiting_verification | not indexed | 0 | 0 | 0 | 0 | matches recorded hash |
 | [Commodifying Cannabis: A Cultural History of a Complex Plant in the Atlantic World](#commodifying-cannabis-a-cultural-history-of-a-complex-plant-in-the-atlantic-world) | verified | 0 / 9 | 2 | 7 | 0 | 0 | matches recorded hash |
@@ -266,5 +266,5 @@ Missing local books are expected on other checkouts. A changed hash requires edi
 | 2. Race and Plant Evolution | indexed_only | — | — | — |
 | 3. Roots of African Cannabis Cultures | read | pp. 53–71; chapter notes 250–258 | culture/traditions/the-calabash-water-pipe.md; articles/us-water-pipe-patent-1980.md; changes.yaml#us-water-pipe-patent-1980; changes.yaml#cape-verde-coconut-water-pipe-1672 | Original patent text verified independently. Treat Duvall’s African technological genealogy as an argument; comparison of designs does not establish copying or patent invalidity. Original 1890 book page not separately examined. |
-| 4. Cannabis Colonizes the Continent | read | pp. 72–94; selected notes on pp. 259–261, 265–266, 268–270 | culture/language/bangi.md; culture/language/diamba.md; culture/language/mbanje.md; culture/language/dagga.md; changes.yaml#south-africa-dagga-word-record-1658; changes.yaml#zanzibar-bhang-mention-1722; changes.yaml#mozambique-dos-santos-bangue-porridge-1609 | Unreviewed chapter notes remain leads. Bangi immediate donor language uncertain; pipe finds do not identify cannabis without residues. Do not convert inferred dispersals into first-arrival dates; revisit THCV selection claims with current primary research before use. |
+| 4. Cannabis Colonizes the Continent | read | pp. 72–94; selected notes on pp. 259–261, 265–266, 268–270 | culture/language/bangi.md; culture/language/diamba.md; culture/language/mbanje.md; culture/language/dagga.md; changes.yaml#south-africa-dagga-word-record-1658; changes.yaml#zanzibar-bhang-mention-1722; changes.yaml#mozambique-dos-santos-bangue-porridge-1609; changes.yaml#angola-bengo-hemp-plantation-1803 | Unreviewed chapter notes remain leads. Bangi immediate donor language uncertain; pipe finds do not identify cannabis without residues. Do not convert inferred dispersals into first-arrival dates; revisit THCV selection claims with current primary research before use. |
 | 5. A Convenient Crop | read | pp. 95–111; selected notes pp. 271–276 (notes 8–107) | culture/traditions/the-heddawa.md; culture/traditions/kif-and-the-sebsi.md; culture/language/chamba.md; changes.yaml#tanzania-nyamwezi-evening-smoking-1859 | Remaining notes not read. The 1921 resin-production reference concerns Algeria, not a verified Moroccan start date. Do not identify the men in figure 5.1 as Heddawa; use the separately attributed 1955 gallery. Treat origin legends and outsider judgments as such. |
 | 6. Society Overturned: The Bena Riamba | read | pp. 112–124; chapter notes 280–286 | culture/traditions/bena-riamba.md; culture/people/sangula-meta.md; articles/dr-congo-bena-riamba-1881.md; changes.yaml#dr-congo-bena-riamba-1881 | Primary accounts conflict about names, kinship and succession. Do not turn approximate reconstruction into precisely dated events. Notes 21 and 35 qualify translations and kinship. |

@@ -1351,4 +1351,5 @@ books:
           - changes.yaml#zanzibar-bhang-mention-1722
           - changes.yaml#mozambique-dos-santos-bangue-porridge-1609
+          - changes.yaml#angola-bengo-hemp-plantation-1803
         follow_up: >-
           Unreviewed chapter notes remain leads. Bangi immediate donor language uncertain; pipe finds do not