15 



Since the last Report, Mr. Locy's paper, " Observations on 

 the Development of Agelena ncevia" has been published in the 

 Bulletin ; and Dr. Mark has reviewed the subject of " Simple 

 Eyes in Arthropods," in a paper which will soon appear in the 

 same publication. 



Natural History 7, which has generally been given at the Museum, 

 was this year transferred to the new Botanical Laboratory in Har- 

 vard Hall. In the special course of Cryptogamic Botany, in charge 

 of Professor Farlow, (Nat. Hist. 12,) there were four students, — 

 two candidates for S. B., one special Scientific student, and one 

 candidate for Ph.D. Two of the students have prepared papers, 

 which are already in press; one has been at work on two papers, 

 one of which will soon go to press, while the other will be pre- 

 sented as a doctor's thesis ; and one student has issued in book 

 form a description of our common genera of Cryptogams, for the 

 use of students. During the year the collections of Dr. Farlow 

 have been consulted by several specialists from other colleges, 

 some of whom remained for several weeks. The amount of in- 

 struction given during the year was greater than usual ; and, in 

 fact, so much of the time of the instructor was necessarily given 

 to students and persons seeking advice, and to the mechanical 

 duties connected with the care and increase of large collections 

 that the publication of papers already much advanced has been 

 seriously delayed. Practically, original work has been limited to 

 the vacations, — the only time when the Cryptogamic Laboratory 

 has been free from students and work could be carried on by the 

 instructor without interruption. A paper on Arctic Algae was 

 issued during the year. 



