262, _Denver (B)_. It has been a long time since any report has been made by this Chapter, and we have been so far separated that we could not do much for the A. A.; but we hope to do better in the future. About one-half the members have been living in the East for two years, while the rest of us were here. We were united a little over a year ago, and since then there has been a great deal of sickness among us, ending disastrously; but for all that, we have had quite a mass of correspondence with other Chapters in all parts of the country, and have also done some exchanging of specimens which has resulted very favorably for us, and, we think, for those to whom we have sent specimens. We have now a very nice cabinet, well filled with specimens which we value very highly, and we shall soon have to get another, as we have room for no more specimens. We hope to do some good work in the future in mineralogy, which is our particular branch of study.--Ernest L. Roberts, Sec. Box 2272. 295, _Boonville, N. Y._ Our Chapter ran down for a long time, but a few months ago we started it anew and in earnest. We now have seven active members, and two honorary. We expect more to join at our next meeting. We meet once a week at the houses of members. Not long ago we went to see an old geologist's cabinet of specimens. He has a great many. He said when he first commenced collecting he lived in an old log-house, and his first cabinet was a log split in two, with a board, that was used for a walk to the spring, nailed on it. If all the members of our Chapter were half as earnest to collect and preserve specimens as he was, we should have some lively times.--W. S. Johnson, Sec. AN INVITATION. The New England Meteorological Society invites the assistance of members of the Agassiz Association in New England and Eastern New York, in the observation of thunder-storms during the summer months. Records are wanted of the time of the beginning of rain and of the loudest thunder for every thunderstorm in all parts of New England. More complete records, giving temperature and direction of wind are welcomed from those who will make them. Instructions and blanks will be furnished, on application to W. M. DAVIS, Sec. N. E. M. S., Cambridge, Mass. EXCHANGES. Minerals, curiosities, and fossils, for same. Send for list. E. G. Conde, Schenectady, N. Y. (Sec. 891). Pressed orange-blossoms, orange-wood, Japan plum-wood, fig-wood, Florida moss and other Southern curiosities, for labeled bird-skins, eggs, or nests. Write first.--Percy S. Benedict, 1243 St. Charles Street, New Orleans, La. Cocoons of the _Cecropia_ and _Promethea_ moths, for cocoons of other moths.--3646 Vincennes Av., Chicago, Ill. Pressed flowers.--Miss Alice Grass, Sec. 323, Bryan, Ohio. First-class bird-skins, for Southern skins or eggs. Write first.--L. M. Davies, 203 Newell St., Cleveland, Ohio. Botanical specimens, for same. Send lists.--Theo. Kellogg, De Pere, Wis. NEW CHAPTERS.