The distance between the cuts is measured, and the time corresponding to it can easily be found.  Then the velocity of the projectile is equal to 50/t.

To repair this target, strings are prepared in advance of suitable length and looped at both ends, so that by placing the hook of the cartridge in one loop and that of the weight in the other the repair is quickly made.

This target has been used on the West Point proving ground to determine velocities over distances of 100 ft. interval to distances of only 9 ft. interval, and has given most satisfactory results.

* * * * *

[Continued from SUPPLEMENT, No. 786, page 12566.]

THE OUTLOOK FOR APPLIED ENTOMOLOGY.

[Footnote:  Address of Dr. C.V.  Riley at the annual meeting of the Association of Economic Entomologists, Champaign, Ills., November 11 to 14, 1890.]

LEGISLATION.

The amount of legislation in different countries that has of late years been deemed necessary or sufficiently important, in view of injurious insects, is a striking evidence of the increased attention paid to applied entomology; and while modern legislation of this kind has been, on the whole, far more intelligent than similar efforts in years gone by, many of the laws passed have nevertheless been unwise, futile, and impracticable, and even unnecessarily oppressive to other interests.  The chief danger here is the intervention of politics or political methods.  Expert counsel should guide our legislators and the steps taken should be thorough in order to be effective.  We have had of late years in Germany very good evidence of the excellent results flowing from thorough methods, and the recent legislation in Massachusetts against the gypsy moth (Ocneria dispar), which at one time threatened to become farcical, has, fortunately, proved more than usually successful; the commission appointed to deal with the subject having worked with energy and followed competent advice.

PUBLICATION.

On the question of publication of the results of our labors it is perhaps premature to dwell at length.  Each of the experiment stations is publishing its own bulletins and reports quite independently of the others, but after a uniform plan recommended by the association with which we meet here; and with but one exception that has come to my notice, another important recommendation of the same association—­that these publications shall be void of all personal matter—­has been kept in mind.  The National Bureau of Experiment Stations at Washington is doing what it can with the means at command to further the general work by issuing the Experiment Station Record, devoted chiefly to digests of the State station bulletins.  There is a serious question in my mind as to the utility of State digests by the national department of results already published extensively by the different States and distributed under government frank to all similar institutions and to whomsoever is interested enough to ask for them.