lot 



bryos were about forty-eight hours of hicubatlon, there being eleven well- 

 defined somites in one and sixteen in the other. The neural canal was 

 partially closed, but only one brain vesicle in each case was developed. 

 Between the two anterior ends was a mass of much distorted structures 

 and apparently including several gill arches. 



The eggs were secured from relial)le parties, and I have every reason 

 to consider them fresh and that they had been properly cared for. My as- 

 sistant assures me that the temperature of the incubator was regular and 

 that all conditions were normal. 



The slide from which tlie drawing was made was prepared V)y Mr. 

 Charles Sudranski. 



The Laice Laboratory at Sandusky, Ohio. 

 Mel T. Cook. 

 The past few years has v\'itnessed a wonderful increase in facilities 

 for biological worl^. Among the most noticeable features has been the 

 estal)lislnnciit of summer laboratories especially adapted for biological 

 research until we now have six marine and a larger number of inland 

 laboratories. Since the character of l)iological work is so dependent upon 

 the locality, and since each locality presents certain problems peculiar to 

 itself, each of these laboratories has certain advantages over its friendly 

 rivals and the itinerant biologist has the opportunity of reaping the bene- 

 fits from all. He meets his fellow-worker and studies the varied fauna 

 and flora under the most favorable conditions. 



Among the earliest of these laboratories was the Lake Laboratory at 



Sandusky, Ohio, which was first opened in 1895, under the direction of 



Professor Kellicott, of the Ohio State University. In ISDS Professor 



Kellieott died and the laboratory came under the direction of his successor. 



Prof. Herbert Osboru, the present director. 



The laboratory was at first intended for investigation only, and for 

 the first four seasons was used by only three or four workers. In 1899 

 there were fourteen investigators and it was then decided to offer regular 

 courses; this was done in 1900 and eacli succeeding year. For the past 

 three seasons the increase in interest has been very pronounced. In 1902 

 there were twenty-four students and six instructors; of the twenty-four 



