14S2 Journal of Applied Microscopy 



The laboratory in which the course of study in invertebrate zoology is given 

 at Wood's HoU is a large room, twenty-eight by fifty-six feet, on the first floor 

 of the south wing of the main building of the Marine Biological Laboratory. The 

 room receives light from the north, west and south sides through eighteen large 

 windows. Directly in front of each window is placed a laboratory table which 

 is arranged to accommodate two students. On the middle of each table is a two 

 shelved rack on which the student finds, in easy reach, a set of the reagents and 

 apparatus he will need for the work of the course. A good arrangement of the 

 reagents and apparatus on the shelves is that given below in the table : 



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One finger bowl, "2 large white dishes, 1 paraffin bottomed tray, 2 pipettes, 

 and a lamp. 



The east end of the room has no windows, but is furnished with a blackboard 

 and a chart rack. In addition to blackboard sketches, a set of Leuckart charts 

 were used in illustrating the lectures of the course. In front of the black- 

 board, a lecture table and several benches are placed. The laboratory is pro- 

 vided with running water, both salt and fresh, and in the middle of the room 

 there are a number of large aquaria. When practical, these aquaria were sup- 

 plied with the animals being studied, thus giving the student the opportunity 

 of seeing the living animal under more or less normal conditions. Considerable 

 stress was laid on this part of the work and twice each week excursions were 

 made to various localities for the purpose of seeing the animals at home. On 



