Total weight of mapping materials.....................31

Natural History (for an occasional collector):  —­
Arsenical soap, 2 lbs.; camphor, 1/2 lb.; pepper,
    1/2 lb.; bag of some powder to absorb blood, 2 lbs.;
    tow and cotton, about 10 lbs.; scalpel, forceps
    scissors, etc., 1/2 lb.; sheet brass, stamped for
    labels, 1/2 lb..............................................16
Pill-boxes; cork; insect-boxes; pins; tin, for
    catching and keeping and killing animals; nets
    for butterflies (say bags and all)..........................10
Geological hammers, lens, clinometer, etc....................... 4
Specimens. (I make no allowance for the weight of
    these, for they accumulate as stores are used up;
    and the total weight is seldom increased.)..............
          
                                                    _______
          Total weight of Natural History materials
             (for an occasional collector.......................30

Stores for Individual Use.

For each white man (independently of duration of journey):  —­
Clothes; macintosh rug; ditto sheet; blanket-bag;
    spare blanket.......................
........................30
Share of plates, knives, forks, spoons, pannikins,
    or bowls.................................................... 2
Share of cooking-things, from pots, coffee-mill
    kettles, etc................................................ 3
Spare knife, flints, steel, tinder-box, tinder,
    four pipes.................................................. 2
Bags, 6 lbs.................................................
.....6
Provisions for emergency —­
    Five days of jerked meat, at 3 lbs. a day (on
       average)..........
.......................................15
    Two quarts of water (on average), 4 lbs.; share of
       kegs, 1 1/2 lb............................................8

_________

Total for each white man.............................66

For each white man, and for each six months:  —­
Tea and coffee, 9 lbs.; tobacco, 6 lbs; salt, 6 lbs.;
    pepper, 1 lb................................................22
Brandy or rum, occasionally served out...........................6
White sugar, 2 lbs.; arrowroot, 1 lb.; dried onions,
    etc., 3 lbs..................................................6
Ammunition for small-bored rifles, with reserve
    powder and caps..............................................9

_________

Total for six months
(or at the rate of 7 lbs. per month)..............43

For each black man (independently of duration of journey):  —­
Bedding, etc.........................................

........... 9
Meat and water for emergencies, as above (about)................19
Share of cooking-things......................................... 2