OBSERVATIONS ON MISCELLANEOUS INSECTS. 35 
Experiment 1.—Labor, 90 cents; material, $1.76 ........-..--.. $2 66 
Experiment 2.—Labor, $2; material; $0.78. -....-..-.---...+-- 2 78 
Experiment 5.—Labor, $1; material, $1.32 ........-.-.-.-..--- 2 32 
Experiment 10.—Labor, $1; material, $2.60 ..........--..----. 3 60 
In one experiment requiring six gallons of the @ solution the cost per 
tree, including labor, was: Whale-oil soap, 28 cents; rosin soap, 25.5 
cents; “a” milk, 15.5 cents; “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. 
~ Inmany 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 upon 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 résumé of what I have observed. 
Apple, pear, quince-—The leaves and tender shoots are destroyed by 
a leat-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 fullsize the larva is 11™™ 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 antt+ damages the roots, form- 
ing a series of rooms, &c., in the older plants. 
Grape.—The Vitis vinifera 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 coleopter{ with long antennee 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 Acrobasis nebulo Walsh. 
+ Crematogaster lineolata (Say.) 
+t Unknown Cerambyeid. 
