THE PROGRESS OF SCIENCE 23 
may be made of a series of photographs of the movements of the eye in 
examining sundry objects and particularly in reading, together with 
the apparatus used in making the negatives. 
Geology and Geography were well represented, particularly through 
the maps and other publications showing the recent work of the United 
States and several State geological surveys. Special mention should 
be made of the new unpublished maps of Connecticut and Massachu- 
setts. The American Museum contributed to this department models 
of Martinique and Mt. Pelé and a series of transparencies of the West 
Indies and Mexico. 
In the section of Mineralogy the most important displays of popular 
interest were the series of specimens of unusually large and perfect 
crystals of Calcite collected last summer in the northern part of New 
York State by an expedition from the State Museum and the set of 
great ruby red Tourmalines and Beryls from near San Diego, California. 
The American Museum showed here some of the most striking recent 
accessions to its cabinet including a particularly handsome group of 
large crystals of Ruby Tourmaline (Rubellite) from California. 
Invertebrate Paleontology does not ordinarily contribute showy 
material to an exhibition, but attention was attracted at the Academy 
““conversazione”’ by the display of ‘Trilobites, Eurypterids (crustaceans) 
Hexactinellids (glass sponges) and other fossils sent down by the New 
York State Museum from recent collecting in the central and western 
part of the state. The American Museum contributed to this section 
some remarkable Cretaceous cephalopods and a series illustrating the 
Jurassic fauna of the Black Hills of South Dakota and Wyoming. 
The major portion of the display in the section of Vertebrate Palzeon- 
tology was contributed by the American Museum and consisted of 
many remarkable specimens most of which have been noticed in pre- 
vious issues of the JourRNAL. Mention should be made, however, of 
the skeleton of the strange-looking Fin-backed Lizard, Naosaurus, 
the restorations of several fossil fishes and the practically complete 
specimen of a giant Tortoise from the Badlands of Wyoming. This 
Tortoise has its nearest living relatives among the big turtles of the 
Galapagos Islands. 
To the sections of Pathology, Pharmacology, Physics and Physiol- 
ogy the American Museum made no contributions of exhibits. ‘The 
section of Physics, as usual, attracted much attention from visitors. 
