252 THE AMERICAN MONTHLY [Aug. 



(7) The eggs : where phicod ; number in a place ; 

 incubation period. 



Regarding the nymphs, cover the points 1,2, 4, and 5 

 of above, and Imagination: hours; phices ; distance 

 from water ; etc. 



It is very difficult to determine all these points for a 

 single species, but the effort will lead on into delightful 

 intimacy with these beautiful insects. 



I will furnish (if desired) half a dozen named nymphs 

 of typical genera to any one who will undertake to collect 

 and rear others. I shall be very willing to determine 

 nymphs or imagoes for any one, and to point out for 

 description such as are new. But I especially desire 

 that accurate field observations and notes be made on 

 many of our species of which we now known only the 

 names, and to such observers I will give all possible 

 aid. — Can. Entomoloo;ist. 



The Myometrium. — Bertelsmann writes regarding the 

 microscopic relations of the myometrium in pathological 

 enlargements of the uterus, with particular reference to 

 the muscle cells. He has made (Archiv fur Gynakologie, 

 Band L), a careful microscopic study of twenty-two 

 enlarged uteri (three cases of mero-endometritis, four of 

 carcinoma of the cervix, three multiple interstitial, and 

 five submucous fibroid tumors). He comes to the follow- 

 ing conclusions : Hypertrophy of the muscle-cells of the 

 uterine wall is frequently associated with interstitial 

 fibroids. Hypertrophy of the muscle-cells always occurs 

 with submucous fibroids and in almost every instance 

 where the uterine cavity contains an abnormal substance 

 (pyometra and hematometra). Hyperplastic changes, 

 also increase of the connective tissue and muscle-cells, 

 were found particularly in metitis and in carcinoma 

 and interstitial fibroids. Thes2 results correspond with 

 those of Ritschl and Herczel, who experimented on the 

 wall of the stomach and intestines by causing artificial 

 stenosis and artificial irritation. 



