The Ottawa Naturalist 



[April 



I \ 



i \ 



Fig. 5. 



twinned according to different twinning laws gives 

 rise to the formation of very complex groups. 



The measurements were made by the two- 

 circle goniometer; the measured values of ^ and p 

 compared with the calculated ones taken from 

 Goldschmidt's Winkeltabellen for the following 

 parameters are given below. 



a:b:c = 0.6100: 1:0.7230. 



NOTES. 



The American Musium of Natural History, we 

 learn from its Journal, has offered to the National 

 War Work Council of the Young Men's Christian 

 Association the choice of any of its thousands of 

 miscellaneous lantern slides which may be found 

 suitable for the entertainment of soldiers in camp, 

 either in this country or abroad. A cable received 

 from France by the War Work Council asked for 

 as many colored slides as possible, with a range of 

 subjects embracing architecture, art, science, war 

 and the scenery of various countries. The museum 

 is preparing also a series of lectures to be circulated 

 among the camps. Four of these now in course of 

 preparation are: "Hunting Elephants and Other 

 Big Game in Africa," by Carl E. Akeley; "Whale 

 Hunting with Gun and Camera," by Roy C. 

 Andrews; "Down the River of Doubt with Colonel 

 Roosevelt," by George K. Cherrie, and "Bird Life 

 on an Antarctic Island," by Robert Cushman 

 Murphy. 



The annual report of the Bristol Museum and Art 

 Gallery, lately published, shows great activity, in 

 spite of the war. During the year 261,594 persons 

 visited the museum. An important new development 

 was in connection with wounded soldiers. Some 

 of the collections were temporarily placed in storage 

 and space was made for a recreation center, includ- 

 ing frequent lectures and demonstrations, concerts, 

 library facilities and light refreshments. 



The brachydomes (092) and (0.12.1) have not 

 been previously observed. 



Of the larvae of Trogoderma tarsale, a small 

 beetle well known as a museum pest, experimented 

 on by J. E. Wodsedalek, University of Idaho, 

 Moscow, Idaho, the last of a large number of 

 specimens lived, without a particle to eat, for the 

 surprisingly long period of five years, one month 

 and twenty-nine days or, to be more specific, from 

 October 28, 1911, to December 25, 1916, a period 

 of 1 ,884 days. Many of the largest larvae which 

 were about 8 mm. in length dwindled down to 

 practically the hatching length of I mm. before 

 dying. When the starved specimens almost reach 

 the smallest size possible and are then given plenty 

 of food, they will again begin growing in size. 

 Occasionally these larvae are found in large num- 

 bers in insect, seed and drug collections, and natur- 

 ally destroyed as soon as discovered. Mr. 

 Wodsedalek would appreciate living larvae or 

 adults of other dermestids. 



