| Provenance: | Former owner's signature: 'Krausz' on front flyleaf.
Former owners' initials: 'LR' on back pastedown; 'EL' on back pastedown.
Manuscript annotations: front pastedown has various little writings in different hands mostly covered by Crerar bookplate.
Extensive manuscript annotations on two rear flyleaves; first page; titled 'table pour la resolution des triangles rectang(le)' below is a table with three columns titled 'etant donné' 'trouver' 'formules'; under column 'etant donné' row 1 'AB,AC' row 2 'AB,BC' row 3 'AC,BC' row 4 'AB,B' row 5 'AC,B' row 6 'AB,C' row 7 'AC,C' row 8 'BC,B' row 9 'BC,C'; under column 'trouver' row 1 'BC // B // C' row 2 'AC // B // C' row 3 'AB // B // C' row 4 'AC //BC' row 5 'AB // BC' row 6 'AC // BC' row 7 'AB // BC' row 8 'AB // AC' row 9 'AB // AC'; under column 'formules' row 1 'BC=sqrt((AB)^2+(AC)^2) // AB:AC::R:t(e)ngente B // AC:AB::R:t(e)ngente C' row 2 'AC=sqrt((BC)^2-(AB)^2) // BC:AB::R:cos B // BC:AB::R:sinC' row 3 'AB=sqrt((BC)^2)-(AC)^2) // BC:AC::R:sinB // BC:AC::R:cosC' row 4 'R:tengeB::AB:AC // cos:B:R::AB:BC' row 5 'R:co(t)B::AC:AB // (S).B:R::AC:BC' row 6 'R:cotC;;AB:BC // sinC:R::AB:BC' row 7 'R:tengC::AC:AB // cosC:R::AC:BC' row 8 'R:cosB::BC:AB // R:sinB::BC:AC' row 9 'R:sinC::BC:AB // R:cosc::BC:AC'; below the table is a triangle is a right-angled triangle labeled 'ABC'; the following pages are extensive notes on these formulas.
Binding: vellum over boards.
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