here and not attempting to go far beyond the present demand. The idea was not to present anything new, but to give as much of the vast amount of the available literature on this subject as would be useful. The bulletin, Bulletin No. 3 of this station, mentions in the introduction the seriousness of some of the insect depredations in Hawaii; emphasizes the importance of precautionary measures in cultivation; it distinguishes between the two classes of insects, biting and sucking, which feed on the external parts of plants; it describes spraying apparatus and explains how to spray successfully, and gives the standard insecticides for both classes of insects, with directions for making the mixtures and applying them. That the bulletin met a popular demand has been shown by acknowledgments received from those on the regular mailing list and frequent requests for additional copies.

The entomologist has visited during the year the Wahiana colony, island of Oahu, to investigate the so-called "melon fly" (Dacus cucurbita); the Kula district, on the island of Maui, where a plant louse (Aphis sp.) threatened the corn crop; Waimea, island of Hawaii, where cutworms belonging to the family Noctuidae (species of the genus Agrotis) had driven several holders of small places to abandon their claims, and all crops, more especially garden crops, were severely attacked; Makaweli, island of Kauai, to conduct spraying experiments to check a scale insect (Mytilaspis pinnaformis) on citrus trees; Kokala, Hamakua, and Hilo districts, island of Hawaii, to investigate the work of a leaf hopper (Perkinsiella saccharicida), a recent pest causing great alarm to the sugar planters; and Makawao, island of Maui, where the Japanese "rose" beetle (Adoretus umbrosis) and another beetle, the so-called "Olinda bug" (Aramigus fulleri), destroyed many newly imported trees. The Japanese "rose" beetle obtained its name because it has made the growing of roses practically impossible except in favored localities, but it is equally destructive to grapes. Both beetles are general feeders and many plants and shrubs suffer from their work.

Observations have been made and spraying experiments conducted in and about Honolulu to check several of the scale insects seriously attacking fruit trees. The report for the year contains valuable data on these various pests, together with the suggestions offered for their control. Much of this information has been disseminated among the people in the farmers' institute meetings and through the reports of the local press.

Other injurious insects mentioned are the peach scale (Diaspis amygdali); Aspidiotus aurantii on citrus trees; Siphanta acuta, locally known as the "torpedo fly," on the mango; the sugar-cane borer; the larva of a beetle (Sphenophorus obscurus), and a leaf hopper of the corn (Dicranotropis maidis).

S. Doc. 148, 58—2—27

The mosquito question is a serious one in Hawaii. No attempt has been made to destroy them, simply protection from the adult being practiced. The introduction of the insect into Hawaii, its distribution and abundance in the Territory, has been worked out. Determinations made by Mr. Coquillett, of the Division of Entomology, U. S. Department of Agricuiture, gives, besides the common mosquito (Culex pipiens), two species of the dangerous yellow-fever genus Stegomyia, the Cuban yellow-fever species (Stegomyia fasciata and S. scutellaris). The entomologist has given several lectures illustrated by lantern slides on the life history and breeding places of mosquitoes and the methods used elsewhere to destroy them. He is taking a leading part in the campaign recently started under the direction of the board of health and department of public works to lessen the number of this pest in Honolulu, and has in preparation a bulletin on the mosquitoes of Hawaii, the result of breeding experiments in the laboratory, and observations in the field.

This department has rapidly outgrown the small space ailotted to it at the beginning of the year. For the coming year's work an insectary in which to carry on breeding experiments and to observe more accurately the metamorphosis of certain species is in course of construction, and more laboratory room with additional equipment will be given.

Acknowledgments are given to Dr. L. O. Howard, Entomologist of this Department, for determinations made of specimens sent to him during the year, and to Prof. V. L. Kellogg, of Stanford University, for many valuable suggestions made by him in organizing the department while visiting the islands one year ago.

ANNUAL REPORT OF THE PORTO RICO AGRICULTURAL

EXPERIMENT STATION FOR 1903.

By FRANK D. GARDNER, Special Agent in Charge.

INTRODUCTION.

The following pages give, in general terms, the progress of the work of the Porto Rico Agricultural Experiment Station for the year ended June 30, 1903. The appropriation made by the United States Congress for the year was $12,000. For the year ending June 30, 1904, however, this amount has been increased to $15,000, and now equals the sum which is appropriated annually to the experiment station in each of the States and Territories. The insular legislature. also made an appropriation of $2,700 for the past year, to be used as follows: Drainage, $800; fencing, $500; tobacco investigations, $500; coffee investigations, $500; irrigation, $300; and painting, $100.

As stated in the last report, the station did not secure possession of its new location until the last week in June, 1902. Considerable of the work of repairing was, therefore, done during the present year and paid for out of funds from the same year. The setting aside of a considerable area of Government land in the northeast part of the island for a forest reserve, as recommended in our last report, has been effected through the proclamation of the President, dated January 17, 1903, and is known as the Luquillo Forest Reserve. It has been placed under the care of the Bureau of Forestry of this Department, and is thus the first forest reserve to fall under the administration of this Department.

Mr. C. R. Newton, clerk and stenographer to the station, resigned January 1 to accept a more responsible position as official stenographer to the supreme court of Porto Rico at San Juan. His place has been filled by Mr. E. C. Howe. Mr. P. A. English, farm foreman, resigned in February to take a place in the Treasury Department, and his place has been temporarily supplied by Mr. E. G. Bowersox. An examination has been held for the position of farm superintendent and it is probable that an appointment will be made to said position in a short time.

Negotiations have been underway for some time in reference to the employment of a horticulturist, but thus far no one has been appointed. The horticultural work has been pushed vigorously, however, by Mr. O. W. Barrett, but to the necessary neglect of his special investigations in botany and entomology.