1892.] THE MICROSCOPE. 195 



This exhibit was prepared by Professor Charles Wright Dodge 

 and it was besieged all the evening by throngs of spectators. You 

 had to " get in line" and gradually work your way along. 



Another exhibition which attracted much attention was the cir- 

 culation of blood in the tail of a fish, shown by William Drescher. 

 This was accomplished in a most ingenious way. A living gold 

 fish was securely fastened in a small vessel containing just enough 

 water to keep it alive. Its tail was projected over the side of the 

 vessel, pressed between two small pieces of glass and firmly fixed 

 under the microscope. The power of the microscope was so high 

 that it resolved the blood, seen through the transparent covering 

 of the fish's tail, into countless little corpuscles, w^hich gave it the 

 appearance of multitudinous grains of sand following each other 

 in and out and round about in endless procession up one aisle and 

 down another, constantly twisting and turning. An extra gold 

 fish lay in a pail of water by the side of the microscope so that the 

 fish on duty might be relieved should he give signs of failing vital- 

 ity. Mr. Drescher stated that a fish would ordinarily accommo- 

 date the investigator in this way for an hour or an hour and half. 

 At the other end of the room was exhibited a frog's foot in similar 

 fashion. 



Many other equally interesting specimens were on exhibit, 

 but space will not permit a more extended notice. The soiree 

 was a great success. 



Friday Morning. 



The microscopists held their concluding session this morning. 

 Professors Kellicott, Rogers, and Claypole were appointed a com- 

 mittee to consider the question of changing the time of meeting 

 so that it should hereafter more closely precedethat of the Amer- 

 ican Association for the Advancement of Science. Mr. C. C. 

 Mellor, of Pittsburg, read the treasurer's report, showing expenses 

 $866.58 and a cash balance of $178.17. The society accepted 

 wdth thanks the anonymous ofter of these prizes, to be awarded at 

 the next meeting : For the best original investigation of plant 

 life, first prize $50, second $25 ; for the best original investi- 

 gation of animal life, first prize $50, second $25 ; for the best 

 mounted slides, first prize $30, second $10 ; for the best pho- 

 tomicrographs, first prize $20, second $10. Professors Kelli- 

 cott, Gage, and Seaman are to announce the conditions in the 

 next number of the society's official publication, and the executive 

 committee of the society is to make the awards. 



Professor E. W. Claypole chose a popular subject and spoke 

 with great emphasis on the general introduction of cheap 

 microscopes. The paper pointed out the importance for the dif- 

 fusion of a knowledge of microscopic science of a low-priced grade 

 of compound microscope suitable for students of high schools and 



