596 The American Naturalist. [June, 
ding in paraffin and celloidin, various methods of staining and mount- 
ing, drawing, reconstructing, modeling, etc. The course will thus 
combine just what is needed as a preparation for investigation. 
This course will open Wednesday, July 5, and continue six weeks, 
and it will be conducted by Mr. Lillie and Professor Whitman. The 
fee for this course will be fifty dollars, and the class be limited to ten. 
Applicants should state what they have done in preparation for 
such a course, and whether they can bring a complete outfit, viz.: a 
compound microscope, a dissecting microscope (the Paul Mayer pat- 
tern made by Zeiss is the best), camera-lucida, microtome, etc. In 
case these instruments are furnished by the Laboratory, an additional 
fee of ten dollars will be charged therefor. No application for less 
than the whole course will be granted. 
THE ZOOLOGICAL LABORATORY FOR TEACHERS AND STUDENTS 
will be opened on Wednesday July 5, for regular courses of six weeks 
in Zoology and Microscopical Technique. The number admitted to 
this department will be limited to fifty, and preference will be given to 
teachers and others already qualified. By permission of the Director 
and by the payment of additional fees, students may begin their indi- 
vidual work as early as June 15, but the regular instruction will not 
begin before July 5. 
` Though more advanced students who may wish to limit their work 
to special groups will have an opportunity to do so, the regular course 
in Zoology, in charge of Professor Bumpus, will embrace a study of 
the more typical marine forms and elementary methods of Microscopi- ` 
eal Technique. The Laboratory work, outlined below, will be accom- 
panied by lectures. 
July 5-8, Study of the Lobster (general anatomy, methods of inject- 
ing, preparation of histological material) ; July 10-15, Coelenterates 
(Campanularia, Tubularia, Metridium, Mnemeopsis); July 17-22, - 
Vermes (Nereis, Balanoglossus and Phascolosoma, Polyzoa, Bdelloura) ; 
July 24-29, Echinoderms (Asterias, Arbacia, Echinarachinus, Thyone); 
- Molluscs (Venus, Sycotypus, Loligo); July 31-Aug. 5, Crustaceans 
(Branchipus, Pandarus, Lepas, Idotea, Talorchestia, Cancer, Limulus) ; 
August 7-15, Vertebrates (Amphioxus, Raja, Teleost). 
The tuition fee is thirty-five dollars, payable in advance. Appli- 
cants should state whether they can supply themselves with simple and 
compound microscopes, or whether they wish to hire. Microscope 
slides, dissecting and drawing instruments, bottles, and other supplies, 
-to be finally taken away, are on sale at the Laboratory. Further 
