1887.] MICROSCOPICAL JOURNAL. 157 
so little opportunity had occurred for becoming acquainted with one another. 
This has led to the attempt to make the Pittsburgh meeting an ez masse 
affair, so that it may be a social as well as a scientific success. The Mononga- 
hela House is well suited for this purpose. There are sufficient rooms for all, 
and convenient reception-rooms which will be at the disposal of members 
during the days of the meeting. The rate will be $2.50 per day. 
‘It is unnecessary to urge the claims of the ‘* Working Session.” The 
advantages of practical demonstrations of methods of work is conceded by 
all. It is hoped that this feature may prove as helpful in the future as it has 
in the past. The preparations for this Session are entrusted to a special com- 
mittee, consisting of Hon. J. D. Cox, Prof. T. J. Burrill, and the Secretary, 
D.S. Kellicott. Those who are willing to assist in the demonstrations or 
who have suggestions regarding this work, are requested to communicate 
with the committee. During one evening of the week there will be a popular 
exhibition of objects and microscopes, and all members attending are urged 
to bring their microscopes and good objects for this occasion. The Local 
Committee will have full charge of this feature. 
‘ Inquiries concerning local arrangements may be- addressed to Jas. H. 
Logan, Room 804 Penn Building, Pittsburgh, Penn.’ 
We copy the following from a letter from C. M. Vorce, Esq., of Cleve- 
land: 
‘ A collecting excursion will form part of the programme, the expedition be- 
ing divided into classes, each of which will search for a distinct class of 
organisms. One party will search for sponges, another for polyzoa, another 
for alge, desmids, and diatoms, another for fungi, etc. 
‘ There is talk also of an excursion to some of the large steel works, glass 
works, gas wells, etc., in lieu of the excursion for pleasure merely, which has 
often been made a feature of the meetings. 
‘The usual soiree to the public will be given, and will undoubtedly be a 
large affair, as the attendance at the meeting will be large and Pittsburgh is 
at present very full of interest in microscopy.’ 
—o 
Elementary histological studies, by the editor, which have reached 
the fourth installment with the present number, are to be continyed into the 
study of the most elementary points of various other structures, e. @., ‘ liver,’ 
intestines, ovary, muscle, eyes, ear, blood, perhaps some other parts. 
These studies are encouragingly spoken of by many, and we give this notice 
of the intention of continuing them in response to enquiries which have 
reached us from several quarters. 
O 
Fat crystals.—We are glad to announce to our readers that, through the 
courtesy of the United States Department of Agriculture, and the kindness 
of Dr. Thomas Taylor, we shall be able to publish in the Yowsma/ five of the 
six plates which are to illustrate a monograph on the subject of butter and 
other fats. These plates are made, in part, from the beautiful photographs 
of the late Dr. Barnerd Persh, of Philadelphia, and serve both as a valuable 
series of figures of the subjects treated, and fine examples of the art by which 
they are reproduced. 
NOTES. 
The British Association met this year at Manchester on August 31st, Sir Henry 
Roscoe presiding. 
