292 C^^^P LIFE. 
your cravat, so that tlie flies cannot make their way 
beneath it ; or the latter may be omitted to enable you 
to wipe your face and rub off those stragglers that will 
find their way in, notwithstanding your precautions. 
There is a light substance called tissue, that makes a 
cool but delicate veil, and is preferable to the ordinary 
barege, and for mosquitoes and black flies, bobinet is 
still lighter, but sand-flies might pass the meshes. 
Yarious ointments have been tried with partial suc- 
cess ; among them, tar ointment has lately become con- 
spicuous, as also oil with a few drops of creosote, but 
my favorite has always been a mixture of the oil of pen- 
nyroyal with an equal amount of almond or sweet oil ; 
this is both cleanly and effectual, and need only be 
renewed once a day. But remember it must be the 
oil and not the essence of pennyroyal, which latter is 
utterly worthless. ' Care must be taken with it, as with 
the others, not to let them run into the eyes, as they will 
produce unpleasant smarting. This composition is death 
on black flies, and quite successful against mosquitoes ; 
but it is well, also, to be provided with tar ointment, 
which will not spill if the bottle is broken. 
For clothes, the best suit is of strong duck, heavy 
enough to resist an able-bodied mosquito, but as loose as 
possible, so that warm flannels, of which every descrip- 
tion should be taken in abundance, can be worn beneath. 
Flannel coats, shirts and drawers or pantaloons can be 
crowded into a small space, and are excellent for keep- 
ing out cold, and are not rendered unpleasant by moist- 
ure. It must be borne in mind that the Summers in 
Canada are occasionally absolutely cold, and for weeks 
