OBSERVATIONS ON MISCELLANEOUS INSECTS. 35 
Experiment 1.— Labor, 90 cents; material, $1.70 $2 66 
Experiment 2.— Labor, $2 ; material, $0.78 2 7s 
Experiment 5.— Labor, $1 ; material, $1.32 - 
Experiment 10.— Labor, $1 ; material, 82.60 3 60 
In one experiment requiring six gallons of the a solution the cost per 
tree, including labor, was: Whale-oil soap, 28 cents; rosin soap, 25.5 
cents; u a" milk, 15.5 cents; u b" milk, 31 cents; zamia, 12 cents. 
The preparation called murvite, evidently an emulsion of low-grade 
kerosene or petroleum, has been quite extensively tried. It acts when 
formed into a solution corresponding to the "a" grade, 5 per cent, ker- 
osene, with little or no difference in looks or effects from the same grade 
of milk. 
In many places in Florida the zamia will be found the cheapest agent 
to emulsify kerosene, it growing in greatest abundance everywhere in 
the State. 
GENERAL OBSERVATIONS ON DESTRUCTIVE INSECTS. 
I beg to submit a report upou insects observed as destructive to veg- 
etation in this section, premising that, with few exceptions, the months 
of February, March, and April are those of greatest insect activity 
here, and that from lack of time I can do but little better than give a 
mere resume of what I have observed. 
Apple, pear, quince. — The leaves and tender shoots are destroyed by 
a leaf-folder. The larva folds two leaves together, and with silk, frag- 
ments of leaves, and its excreta forms a cylinder in which it remains 
during the day.* At full size the larva is ll mm long, of a purplish-gray, 
the head a dull red brown, with a white dot or tubercle like an eye on 
each- side the head, a few scattering hairs over the body. It changes 
to a chestnut-brown cocoon within its gallery. I have not yet obtained 
the moth. The apple and quince are of little value here, but the pear 
is assuming considerable importance. 
Banana. — A very small, black, stinging ant 4 - damages the roots, form- 
ing a series of rooms, &c, in the older plants. 
Grape. — The Vitis rin i/era and V. labrusca both destroyed by a small, 
gray beetle; the Desmia destroys the leaves; a small yellow and black 
larva, striped or ringed, comes in platoons on the under side of the leaf. 
A large gray coleopterf with long antennae is found, and a small larva 
changing in a white cocoon. A leaf-cutting bee mutilates the leaves, 
and a small grub- worm bores the roots. I have found no Phylloxera, 
nor any insects upon the " Scuppernong" varieties. 
Guava. — No insects reported. 
Loquat (Eriobotrya japonica). — A leaf-folder found. 
* Probably dcrobtuia nebulo Walsh. 
\ Crematogcuter lineolata (Say.) 
; (Jnknowo Cerambycid. 
