i 8 9 2.] 
443 
[Annual Meeting’. 
courses have been given in the from either of laboratory lessons or 
of field work. The teachers have been required to keep note books 
and attend examinations and in return for this it is proposed to 
issue certificates to those who attain satisfactory proficiency in the 
different subjects taught. 
The field course in geology by Mr. Barton, referred to as the 
spring course in the last annual report, was successfully finished 
on the 20th of June, 1891, having been begun as previously 
stated April 18, 1891. Ten lessons and excursions were given 
according to the programme described in previous reports. The 
whole number of tickets issued was 70, many of the mem- 
bers having been in former classes. Admission was granted to 
all applicants and on one excursion 63 persons presented them- 
selves. The average attendance was 32.46. One of the lessons 
involved a stay over night at Newport, and Mr. Barton, at the 
special request of the class, gave an additional excursion on June 
17 and another on June 27-28, spending two days in the examin- 
ation of the geology of Gay Head, Martha’s Vineyard. 
The field course, consisting of ten excursions given in the 
autumn by Mr. Barton, began on September 12 and was 
finished November 14, 1891. The whole number of tickets issued 
was 81, of which 51 were given to members of former classes. 
The average attendance was 35.5. The excursions were held 
principally in the immediate vicinity of Boston, but two lessons 
were at a greater distance. One of these occupied two days in a 
trip to the Hoosac Tunnel and vicinity, and on the other the class 
visited an entirely new place, Mt. Holyoke in the Connecticut 
Valley. Having found it feasible to reach the latter and give the 
lesson in a single day the attempt was made and it turned out to 
be one of the best places for field work of this kind that could 
have been selected. 
The spring course in geology for 1892 was begun by the same 
gentleman on April 2d and is now in progress. 
The winter course in petrology consisting of fifteen laboratory 
lessons of two hours each, also given by Mr. Barton, was begun 
December 5,1891 and finished March, 1892. The whole number 
of tickets issued was 75 and the average attendance was 
50.6. This course was the third in a series of four consisting 
of one each in mineralogy, lithology, petrology, and historical 
geology. A few members of the preceding classes dropped out 
