Annual Meeting.] 260 [May T, 
The Early Types of Insects: or the Origin and Sequence of In- 
sect Life in Palaeozoic Times. By Samuel H. Seudder. pp. 9. 
A third number is in preparation. A new volume of Oc- 
casional papers —the third—is also in press, and will be 
issued during the summer. It contains Mr. W. O. Crosby’s 
Geology of Massachusetts, and will form a volume of about 
350 pages with colored maps and plates. 
The nineteenth volume of Proceedings has been completed 
by the publication of two quarterly parts, and the first part 
of vol. xx has been issued. 
Besides the regular publications, a series of “ Guides for 
Science Teaching” was experimentally undertaken in 
January. These were intended to accompany the courses of 
lectures to teachers already described by the Custodian. 
Three numbers. (About Pebbles, by Prof. Hyatt; A Few 
Common Plants, by Dr. Goodale ; and Commercial and other 
Sponges, by Prof. Hyatt), were published, the cost being de- 
frayed by sales, when Messrs. Ginn & Heath, the well-known 
publishers of school books, .offered to carry on the work, 
which was accordingly placed in theirhands. A fourth num- 
ber has since been published, a fifth will appear this week, and 
a further continuation of the series has been arranged. 
Our exchange list now numbers 352 Societies or journals, 
of which 50 are United States and Canadian. This number 
does not exceed that for 1870, although many new exchanges 
since that time have been arranged. Many names then on 
the list, however, did not represent actual exchanges, and 
have since been dropped, and the list is larger than that of 
any similar body in the United State, excepting, of course, 
the Smithsonian Institution. 
Nine new exchanges have been added during the year: — 
The Midland Naturalist, Birmingham, England. 
Sociedad Cientifica Argentina, Buenos Aires. } 
Societa Crittogamologica Italiana, Milano, > 
Société Philomatique de Paris. 
Zoologischer Anzeiger, Leipzig. 
Cambridge Entomological Club, Cambridge, Mass. 
New York Microscopical Society. 
Department of Agriculture, Washington. 
Science News, New York. 
